Darwin's experiments are just one way to study phototropism. A student wants to investigate the effects of phototropism in bean plants. She places a light source directly above one plant, at a forty‐five degree angle to another, and at a ninety‐degree angle from the third.

What is her independent variable?

What is a hypothesis she might write for her experiment?

According to the encephalization doc online the blood flow into the and around the cranium is the same for chimpanzees and humans is False.

Encephalization is a process that refers to the evolutionary growth of the brain in different species over time. The process of encephalization is marked by an increased amount of brain mass in comparison to body mass.The blood flow around the cranium is not the same for chimpanzees and humans. Chimpanzees and humans differ in the blood flow that takes place in their cranium. The human brain receives more blood than the chimpanzee brain, this is because of the increased number of neurons and also because of the human's need to sustain a higher metabolism compared to chimpanzees.Hope this helps!

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A indicates where most nutrient and waste exchange occurs between the tissue and blood i.e., the capillaries

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Answer: Sun

Explanation:

Answer:

True

Explanation:

the range of motion is less than that of the shoulder joint because of the action of walking.

hope this helps

Science is known to have made regular people decide to work hard and dedicate themselves to solving a problem. The events that are triumphs of science are;

There have been the footprint of Science behind making Children smarter in music, chess, computer etc.

There are now cheaper and cleaner biofuels that is produced through genetic engineering to alter how some organisms process sugar.

Cell cycle checkpoints are very important to halt cell cycle increase in response to DNA damage, making time therefore for DNA repair.

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Read the statements below. Select the events that are triumphs of science. Regulating the cell cycle to fight cancer.

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Answer:

B

Explanation:

The fact that new technology has led to the exoneration of several people who served many years in prison before being cleared led to the abolition of the death penalty in several states because the revelations cast doubt on the current criminal justice system.

Exoneration is the action of officially absolving someone from blame and reversing their conviction for a crime. Generally, it occurs when new evidence comes forward to demonstrate the person's innocence.

The development of technology has led to the exoneration of many people so far. The one that has a relatively big role is DNA testing because it can determine identities with almost 100% accuracy.

The fact that many people have been falsely convicted after DNA testing technology proves their innocence makes several states abolish the death penalty.

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Answer: d. mass

Explanation: just tookthe test.

Answer:plasma membrane

Explanation:

Lymphocytes is agranulocyte large round nucleus

Which cell type is an agranulocyte?

White blood cells known as agranulocytes lack recognizable granules in their cytosol. Large solitary nuclei make up the majority of lymphocytes' cells. They play a significant role in the immune system of the organism. The biggest type of white blood cell is called a monocyte.

The nucleus typically has an irregular form, ranging from oval to bean, and pale staining, finely granular chromatin. The cytoplasm is typically more granular than that of the lymphocyte, has a slight basophilic tint, and may seem vacuolated. Lymphocytes come in a variety of sizes. They have a spherical shape and a massive center that occupies the majority of the cytoplasm. No particles exist in the cytoplasm. 20–40% of all leukocytes are lymphocytes.

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Answer:

a reversal in U.S. pesticide policy, a nationwide ban on DDT for agricultural uses, and an environmental movement that led to the creation of the U.S. Environmental Protection Agency.

Answer: phosphate group, sugar molecule, and nitrogen base

Explanation: classroom notes

Becky will be a 4-month-old infant whose mother uses a high-pitched voice, simple words or phrases, as well as lots of repetition when she speaks. Becky will likely react with; Increased attention, Increased eye contact, Smiling and cooing, and  Mimicking sounds.

Increased attention; Infants are naturally drawn to high-pitched voices, which often capture their attention. Becky may display heightened interest and focus when her mother speaks in a high-pitched voice.

Increased eye contact; Becky may make more eye contact with her mother when she uses a high-pitched voice and speaks directly to her. Eye contact is an essential aspect of early communication and bonding between infants and caregivers.

Smiling and cooing; Simple words or phrases, along with repetition, can be engaging and stimulating for infants. Becky may respond to her mother's speech by smiling, cooing, or making vocalizations as a way of expressing her interest and enjoyment.

Mimicking sounds; Infants often try to imitate or mirror sounds they hear around them. If Becky's mother repeats certain sounds or words, Becky may attempt to reproduce them, initiating a back-and-forth "conversation" with her mother.

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Answer:

The nucleus is the pink dot and the electrons are in the shell (the blue area).

Explanation:

I hope this helps!

The nucleus is in the center, the red dot. The electrons are on the outside of the atom, the blue area.

Answer:

I think you asked for balanced and unbalanced chemical equations. your answer is in the attachment !

I'm not sure if you're talking about forces or not, but ill answer anyways.

Balanced Forces:

Unbalanced Forces:

Answer:

DNA ligase

Explanation:

Answer: The nucleus

Explanation: I got it right on the test.

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glucose. It is a vital process for the Earth's ecosystems and is responsible for producing oxygen and organic compounds that serve as the basis of the food chain.

1) Herbicides targeting Photosystem II (PSII) block the flow of electrons in the photosynthetic process, thus preventing the generation of energy necessary for the plant's growth.
2) Herbicides inhibiting Chlorophyll Absorption impair the plant's ability to absorb sunlight, which is essential for photosynthesis to occur.
3) Herbicides affecting Photosystem I (PSI) interfere with electron transfer in this system, reducing the efficiency of photosynthesis.
4) Herbicides targeting Chlorophyll production will reduce the plant's ability to produce this crucial pigment, which is responsible for the capture and utilization of light energy in photosynthesis.
5) Herbicides acting on the Calvin Cycle interfere with the process of carbon fixation and the synthesis of sugars, which are essential for the plant's growth and development.
6) Herbicides inhibiting ATP Synthase impede the synthesis of ATP, which is a vital energy source for the plant's metabolic processes.

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After observing the characteristics and movement of the protist Paramecium, it appears more animal-like.

Paramecium is a unicellular organism belonging to the group of ciliates. It exhibits animal-like characteristics and behaviors. Paramecium moves by using hair-like structures called cilia, which beat rhythmically to propel the organism through its environment. This type of movement is more typical of animal cells.

Additionally, Paramecium is heterotrophic, meaning it obtains its energy by ingesting other organisms or organic matter. It feeds on bacteria and other small microorganisms present in its habitat. This mode of nutrition is typical of animals.

While Paramecium shares some similarities with plants and fungi in terms of being eukaryotic organisms, it lacks characteristic features of plant cells (such as chloroplasts for photosynthesis) and fungal cells (such as cell walls composed of chitin). These distinguishing features align Paramecium more closely with the animal kingdom.

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Answer:

D

Explanation:

Anaerobic respiration evolved first; aerobic respiration evolved after photosynthetic organisms began producing oxygen

Answer:

D

Explanation:

Anaerobic respiration evolved first; aerobic respiration evolved after photosynthetic organisms began producing oxygen

Answer:

The answer is True.

Earth stores carbon naturally as part of the carbon cycle. When the system is not in equilibrium, it corrects itself. The Earth has been emitting and storing carbon for millions of years, cycling it between sky, sea, soil, and rock. And the law of conservation of matter states that no matter is destroyed, nor created, likewise with energy.

During the technological design process, you would develop a solution

Answer:

Intrauterine insemination IU

Explanation:

In  this scenario the required numbers of sperm are not released in the semen of the Hans needed to fertilize Sharon ovum..Therefore,a technique is needed to directly inject  an healthy sperm, into her uterus to fertilised  her ovum directly,the technique is IU.

It is a process which involve the selection of healthy sperm.and injected this during ovulation in the female.With this procedure,the likelihood of fertilization  and pregnancy occurring is high,as the distance,time  and competition with other sperm cells is reduced.This makes the procedure reliable.

It is simple technique which involves the sperm washing to get the best concentration of sperm to use, monitoring of the ovulation and  optimal timing; which targets best time of ovulation,usually day 1 or day 2 after ovulation.

it is relatively less expensive.

The evidence used by the speaker in the video that helps support the position that birds at the top of the food chain have been harmed the most by DDT is by stating claims about birds and their environment and using evidence to support the claims.

William Engdahl, an analyst and researcher, in his speech "The DDT Story - How US
Agency for International Development Used Third World Citizens as Guinea Pigs for
Human-Testing of a Known Carcinogen," shows how the pesticide DDT (dichloro-diphenyl-trichloroethane) had a catastrophic impact on birds, wildlife, and humans.

Engdahl uses evidence to support his statements, demonstrating how DDT became a global concern and how it triggered public action to counter the impacts. Based on the question, the speaker supports the position that birds at the top of the food chain have been harmed the most by DDT by stating claims about birds and their environment and using evidence to support the claims.

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Answer: The correct answers are as follows:

1. During cytokinesis, THE CELL MEMBRANE PINCHES IN TO FORM TWO NEW CELLS.

Cytokinesis is the physical process of cell division, it divides the cytoplasmic content of the parental cell into two new daughter cells. Cytokinesis takes place in both mitosis and meosis.

2. The correct order of the phases of mitosis are as follows: PROPHASE, METAPHASE, ANAPHASE AND TELOPHASE.

Mitosis is the process of cell division by which a cell is divided into two new cells. The process occurs in four basic stages and result in the formation of two new cells.

3. The following terms are related to sexual reproduction: MATING SYSTEM, GAMETE FORMATION AND AMPLEXUS.

Amplexus refers to the mating positions of frogs and toads during sexual reproduction. Mating system refers to the number of mating partners that an animal has during the mating period. Gamete formation is the process by which sex cells are made and it occurs in both male and female animals.

4. As a cell is preparing to divide by mitosis, the DNA MUST BE COPIED.

When a cell is getting ready to divide by mitosis, it will undergo a stage called interphase, during which the cell prepare for cell division. During interphase, the cell undergo some process and these include the copying of the DNA. The cell copies its DNA so that it has two copies of each strand.

Explanation:

Answer:

The offspring of sexually reproducing organisms are all genetically unique. Because of this, sexually reproducing organisms may have more successful survival of offspring in environments that change than asexually reproducing organisms, whose offspring are all genetically identical.