In 1953, Stanley Miller and Harold Urey built a model of Earth's early
atmosphere by mixing gases that were thought to have been there. They
exposed the gases to an electric current to simulate lightning. The liquid that
condensed during the experiment contained amino acids.
What was the significance of their results?
A. Miller and Urey showed that lightning was necessary for life to
form on Earth.
B. Miller and Urey showed that spontaneous generation was
possible.
C. Miller and Urey showed that inorganic compounds could combine
to form the building blocks of living cells.
D. Miller and Urey showed that all life evolved from a single common
ancestor.
Answers
Answer: C. Miller and Urey showed that inorganic compounds could combine to form the building blocks of living cells.
Explanation:
The Miller and Urey were the two scientists who created the atmospheric conditions that were expected to be present on primitive earth. They demonstrated that several organic compounds have been formed spontaneously from the inorganic compounds like water, ammonia, methane and others.
The exposure of mixture of inorganic compounds by the lightening lead to the formation of organic molecules like amino acids which are the building blocks of life. This was similar to the penetration of earth atmosphere by UV radiation producing the organic compounds from inorganic molecules.
Related Questions
GIVING BRAINLIEST what is a animal that has 4 legs and one tail and has spots
Answers
Answer: Leopard or a jaguar.
Explanation: Both leopards and jaguars have 4 legs one tail and spots
Look at the diagram of the rock cycle below.
Which part of the cycle is missing?
A.
sedimentation
B.
melting
C.
crystallization
D.
mineral integration
Answers
it’s melting
From the diagram of the rock cycle the missing part is ( B ) ; Melting
Magma is a hot liquid/semi-liquid rock that is usually formed under the earth due to high pressure and temperature present in the inner core of the earth. magma is obtained by the melting down of existing rocks ( Igneous, sedimentary and metamorphic rocks ) under high pressure and temperature in the earths core.
Magma is released to the earth surfaces during volcanoes therefore the missing term in the rock cycle is melting
Hence we can conclude that from the diagram of the rock cycle the missing part is Melting.
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helloo can someone help me please??
Answers
Answer:
I can't see the picture of this answer
Beavers, large members of the rodent family in North America, are often referred to as “ecosystem/keystone engineers” by wildlife managers. Ecosystem engineers are described as animals that create, alter, or destroy a habitat. Beavers contribute to river ecosystems by bringing down old and dead trees along riverbanks. They use these trees to make their dams. Although these dams are primarily used for protection and food storage, scientists report that these dams change the surrounding environment in different ways.
Given this information, in three to five sentences, describe a potential benefit that beavers contribute to the ecosystem as keystone engineers and describe a plausible impact that the removal of beavers could have on the surrounding ecosystem.
Answers
Answer:The potential benefit that beavers contribute to the ecosystem include sources of food and habitat for some animals.This consists of all the organisms and the physical environment with which they interact.The removal of the beavers will allow for more oxygen to be present within the ecosystem as a result of increased plant population.
Explanation:
Answer:
2-6=4 thx
Explanation:
it is thx
where did the name '' hamster'' probably come from?
A. The animal was discovered by a person named Hamm.
B. People thought the animals looked like little hams.
C. It comes from a word meaning ''tiny''.
D. It comes from a word meaning ''to hoard''.
Answers
Answer:European Hamster
Smallest breed
Roborovski hamster
Stout-bodied rodents,
with tails shorter than body length, and have small, furry ears, short, stocky legs, and wide feet.
en.wikipedia.org
Popular breed
Golden hamster
They carry food in their spacious cheek pouches to their underground storage chambers. When full, the cheeks can make their heads double, or even triple in size.
en.wikipedia.org
Explanation:
Constructing a Pedigree Chart Trait: albinism is a recessive trait A- Dominant a- recessive 1. Individual 1 (female parent); Individual 2 (male parent). 2. 1 is normal and individual 2 is albino 3. 1 and 2 have three children: #3- female, normal #4- male- is albino #5- female, normal #6 female, albino 4. #6 marries a normal male (#7) 5. #6 and #7 have three children #8- female- normal #9- female- albino #10- female- albino 6. #3 marries a normal male (#11) 7. #3 and #11 have two children #12- male, albino #13- female- normal
Answers
Answer:
Im confused by this
Explanation:
Im not sure if you really need help cause everything is all there
Explain how natural selection can lead to extinction
Answers
Answer:
If the environment changes rapidly,some species may not be able to adapt fast enough through natural selection.
Explanation:
that's my answer
What structures (Homologous, Analogous, or Vestigial) would be most helpful in studying the selective pressures in an environment. Explain.
Answers
Answer:
Vestigial structure
Explanation:
Homologous structures are physical structures such as organs or skeletal elements present in numerous species that come from a shared common ancestor. Analogous structures are bodily structures that resemble one another superficially and provide a similar function but have evolved separately and do not come from a shared common ancestor (such as the wings of an insect and bat). One vestigial structure present in humans is the appendix. This organ was once vital in the consumption and digestion of uncooked meat, but no longer serves a function.
In the process of origin of species a lot of species has come from a common ancestor as homologous are the organism who have same structures and origin and same function as well while analogous are those who have same structures but functions are different in that case analogous and homologous are also considered as the organism from common ancestors but organism who have vestigial organs are not consider as the organism came from same ansector
a solar or lunar eclipse does not occur each month because _____.
A. the moon revolves slowly around the Earth
B. the sun, moon, and the Earth are not exactly aligned each month.
C. the moon is much smaller than the sun
Answers
Reason: The Earth and Moon have slightly not orbiting about their parent body’s equator.
what are the answers to these? little stuck
Answers
Answer:
for question 5 it is true, for question 3 it is true, question 1 is true, and question 2 is true.
Explanation:
Have a great day/night:)
Please help, I will give brainliest!
Answers
2: green.
(I hope this helped.)
2. Red, I would say all of the above but green is the lowest so it wouldn’t work.
Write a clear, thoughtful 2 paragraph argument that explains HOW 3 body systems work together to promote life functions.
0
No Effort
10
Student correctly identifies at least 3 body systems from the seven systems taught in class.
Student applies knowledge of each body system giving their function and major organ/s.
Student clearly demonstrates through explanations of how each body system works with each other.
Student uses learned writing strategies and writes in complete sentences
Minimum of 8 complete sentences.
Jaime went to the doctor because several strange things have been happening to him. He first noticed that sometimes when he tries to touch something he is unable to feel it. Then he noticed that when he tried to walk his legs wouldn’t always move the way he wanted them to. Lastly, he has been unable to control when he urinates.
HUMAN BODY SYSTEMS QUICK GUIDE
Circulatory : Transport gasses(oxygen,CO2) and nutrients throughout body;
Digestive: Breakdown of nutrients (food);
Nervous: Process & respond to stimuli;
Respiratory: Gas exchange;
Muscular: Movement;
Excretory: Eliminates waste to maintain homeostasis;
Immune: Defense against disease
Answers
Answer: the human body is made up of multiple interacting systems, within the systems there are 3 that really work together. for starters, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce. The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells. Working along these cells is the digestive system, the human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion. Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body which then provides nutrients that give the body energy.
Explanation:
i hope someone had helped you cause i got this same question
What two molecules transfer their energy to ATP to provide fuel for cells?
a. carbohydrates and lipids
b. enzymes and nucleic acids
c. amino acids and nucleic acids
d. amino acids and lipids
Answers
The simple graph shows the relationship between available resources and population size. What evidence does the graph provide? A. An increase in the amount of available resources causes a decrease in population size. B. A decrease in the amount of available resources causes a decrease in population size. C. An increase in the population size causes an increase in the amount of available resources. D. A decrease in the population size causes a decrease in the amount of available resources.
Answers
Answer:
b
Explanation:
Its right
Sorry if not correct
Based on the data shown in the table, what question is most likely being tested?
Question 5 options:
Which weed grows faster in rainy seasons?
Which plants had the most growth between 1980 and 1984?
How does levels of rainfall affect growth of sweet pea and chickory plants?
How did the rainfall and plant growth change between each year in the early 1980s?
Answers
Answer:
it would be C how does levels of rainfall affect growth of sweet peas and chickory plants
Explanation:
i hoped this helped if any
Based on Darwin's observations, what is the best possible explanation that two organisms that live very far away from each other and in different environments share similar traits?
A: The organisms evolved similar traits that are useful in a wide variety of environments.
B: These organisms developed similar traits because their environments were at one time similar.
C: The organisms share a common ancestor from long ago.
Answers
Answer:
B: These organisms developed similar traits because their environments were at one time similar.
Explanation:
As per the given data the answer is correct.
which of the following segments of the growth curve would starvation proteins be at their highest detectable levels?
Answers
Pls help! is due tomorroww
Analyze your data, then respond to the questions below.
What trends/changes do you notice in the walking sticks over five generations? Develop a possible explanation for these results.
Answers
Answer:
write Two uses ot each inclined plane pulley and whell an axle
pls help me, I need this rn, thank you!
Answers
Answer:
1.) DEPED: Department of Education;
Role: Improving the quality of education
2.) DENR: Department of Environment and National resources;
Role: Conservation, management, and development of the country's environment and natural resources.
3.) DOST: Department of Science and Technology
Role: The executive department of the Philippine Government responsible for the coordination of science and technology-related projects in the Philippines
4.) DSWD: Department of Social Welfare and Development
Role: Develop, implement and coordinate social protection and poverty-reduction solutions for and with the poor, vulnerable, and disadvantaged.
5.)TESDA: Technical Education and Skills Development Authority
Role: The government agency tasked to manage and supervise technical education and skills development in the Philippines.
Explanation:
VERY LATE REPLY, SORRY!!!!
These are just some of the Philippine government agencies that are involved in protecting the environment. There are many other agencies that play a role in this important task.
What are these agencies?Department of Environment and Natural Resources (DENR): The DENR is the lead agency in the formulation and implementation of environmental policies, laws, and regulations. It is also responsible for the management of natural resources, including forests, wildlife, and marine resources.
Department of Science and Technology (DOST): The DOST conducts research on environmental issues and develops technologies to address them. It also provides technical assistance to other government agencies and the private sector in the implementation of environmental programs.
Department of Social Welfare and Development (DSWD): The DSWD provides social services to people affected by environmental disasters. It also provides assistance to communities that are vulnerable to environmental hazards.
Technical Education and Skills Development Authority (TESDA): TESDA trains people in environmental-friendly technologies and practices. It also provides certification to workers in the environmental sector.
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what are real life examples for a chloroplast?? i need them for school
Answers
Answer: Solar panels
Explanation:
Infectious Disease Investigation
The students are to investigate an infectious disease.
They will choose a specific infectious disease, such as the flu, common cold, or
COVID-19, and research its causes, symptoms, and preventive measures.
Students are to create informative posters or presentations about the disease,
including its transmission methods and ways to protect oneself from infection.
They will explain the importance of personal hygiene and vaccination in preventing
the spread of infectious diseases.
Following the summer vacation, the students will be given an opportunity to present
their findings to the class or organize an "Infectious Disease Awareness Campaign"
where they can share their posters or presentations with their peers.
Answers
Answer:
The common cold is an illness affecting your nose and throat. Most often, it's harmless, but it might not feel that way. Germs called viruses cause a common cold.
Often, adults may have two or three colds each year. Infants and young children may have colds more often
how are osmosis and facilitated diffusion alike?
Answers
They both use passive transport. they don't need energy to move molecules through the plasma membrane.
An ecosystem has ________________________ when it has a large variety of organisms and has enough resources to support those organisms.
Answers
Answer:
Biodiversity
Explanation:
Biodiversity refers to the variety of living species on Earth, including plants, animals, bacteria, and fungi.
Hope this helps you :)
answer this question, multiple-choice question!
Answers
Answer:
CSO, fertilizers. cleaning products
Explanation:
Some people have one sickle cell gene and one normal gene. They have few defective cells and no symptoms because the sickle cell gene is recessive. How does the method of reproduction in humans result in people getting one copy of a sickle cell gene and one copy of a normal gene? Describe the process
Answers
For the gene that causes sickle cell disease, there are two possible versions, or alleles: a normal allele and a sickle cell allele. A person who has one copy of the normal allele and one copy of the sickle cell allele is said to be a carrier of sickle cell disease. They have few defective cells and no symptoms because the normal allele is dominant, meaning that its effects are seen even when only one copy is present.
When two carriers of sickle cell disease have children, each parent gives one copy of their sickle cell allele or their normal allele to their offspring. There are four possible combinations of alleles that their children can inherit: normal/normal, normal/sickle cell, sickle cell/normal, and sickle cell/sickle cell. The first combination results in a child who does not carry the sickle cell allele and does not have the disease. The second and third combinations result in children who are carriers like their parents, with one copy of the sickle cell allele and one copy of the normal allele. The fourth combination results in a child who has two copies of the sickle cell allele and will develop sickle cell disease.
Answer: This process of genetic inheritance through sexual reproduction ensures that individuals can inherit a mix of genes from their parents, including the possibility of receiving one copy of a sickle cell gene and one copy of a normal gene, resulting in the carrier state with few defective cells and no symptoms.
Explanation: Sickle cell gene refers to a genetic variant that causes abnormal hemoglobin and leads to sickle cell disease when inherited from both parents. Normal gene refers to the typical gene variant that does not cause any genetic disorders or abnormalities.
The method of reproduction in humans, known as sexual reproduction, involves the fusion of two gametes (sperm and egg) during fertilization. Each parent contributes one set of chromosomes, including the genes, to their offspring.
When it comes to the sickle cell gene, it is inherited in an autosomal recessive manner. This means that the sickle cell trait (having one sickle cell gene and one normal gene) occurs when an individual receives one sickle cell gene from one parent and one normal gene from the other parent.
To illustrate the process:
Each parent has two copies of the gene for hemoglobin, the protein responsible for carrying oxygen in red blood cells.One of the parent's copies has the sickle cell gene (HbS) and the other copy has the normal gene (HbA).The same is true for the other parent, with one sickle cell gene (HbS) and one normal gene (HbA).During reproduction, the parent's sex cells (sperm and egg) are produced through meiosis, a specialized type of cell division.In meiosis, the parent's pairs of chromosomes separate, and the resulting sex cells contain only one copy of each chromosome.Each parent's sex cells randomly combine during fertilization to form a new individual with two sets of chromosomes, one from each parent.As a result, there is a 25% chance that the offspring will receive two sickle cell genes (HbS/HbS) and have sickle cell disease, a 50% chance of receiving one sickle cell gene (HbS/HbA) and being a carrier of the trait, and a 25% chance of receiving two normal genes (HbA/HbA) and not having the trait or disease.
A student wants to find out if the amount of bleach has an effect on stain removal.
He plans to use two white shirts, stain each of them with mustard, and then wash each of them using bleach. He can change the size of the stain on the shirt and the amount of bleach he adds to the water.
Which test should the student set up?
Answers
Answer:
The second option.
Explanation:
We're trying to test the amount of bleach that has an effect on the stain so that is the altered variable.
The 2nd option uses different amounts of bleach to clean the same amount of stain.
If you choose the other options, people can argue that the bigger stain would be harder to clean with one cup of bleach, whereas the small stain gets two cups or the other way around.
It's not an effective way to see if the amount of bleach has an effect on stain removal.
Select your answer from the choices below, then write them on its appropriate column.
Answers
Answer: The duties that the students and community members have to be done to save our environment and resources
Explanation: My part as a students
1. Switch off classroom lights and fans when not in use.
2. Plant a tree (in vacant lot / backyard).
3. Join environment friendly groups.
4. Switch to non- plastic water bottles.
5. Switch off faucets in the school or park when not in use.
My initiative as a Community Member
1. Conserve water.
2. Throw garbages in the trash can.
3. Decrease the amount of paper you print.
4. Minimize the use of plastic when buying good
5. Volunteer for clean-up drives.
The correct options that have to be filled in its appropriate column are:
The part as a Student in conserving the environment.
Decrease the amount of paper you print.Switch off classroom lights and fans when not in use.Conserve water.Switch to non-plastic water bottles.Minimize the use of plastic when buying goods.My Initiative as a Community MemberVolunteer for clean-up drives.
Join environment-friendly groups.Plant a tree (in a vacant lot/backyard).Throw garbage in the trash can.Switch off faucets in the school or park when not in use.Thus, these are the correct options for the given columns.
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Which describes how prevailing winds affect precipitation in a region?
A . Prevailing winds force cool, moist air from oceans to rise.
B . Prevailing winds blow in the opposite direction as normal winds.
C . Prevailing winds cause huge air masses, both warm and cool, to move.
D . Prevailing winds that move over land usually cause the most precipitation.
w
Answers
Answer:
It's C on your test/quiz
Prevailing winds cause huge air masses, both warm and cool, to move.
Explanation:
Have a great day!
Answer:
C.) Prevailing winds cause huge air masses, both warm and cool, to move.
Explanation:
=D
please help me I'll give brainlist
Answers
Answer:
blank 1 : can detect
blank 2 : homeostatis
pls give me brainliest
A project for a science class asks teams of students to build a windmill. The windmill is placed in front of a large floor fan. The goal for the project is to lift the greatest mass to a height of 1 meter in one minute. Which team had the best design?
A) Team A
B) Team B
C) Team C
D) It cannot be determined from the information in the table.
WILL MARK BRAINLIEST
Thank you
Answers
Answer:
C
Explanation:
I only say C because it seems closest.
Answer:
c
Explanation:
Team c