If a period contains many fossils of species that previously weren't found, what type of event most likely took place on Earth?Natural selectionMass extinctionPunctuated evolutionPopulation equilibrium

Answer:

50%

Explanation:

To solve this, we'd need to use a Punnett square.  Since the mother has a heterozygous genotype and has an A-blood phenotype, we know that she is AO and the father is AB.

          A             B

A       AA           AB

O      AO           BO

According to this, the four possible blood types, with equal probability are: AA, AB, AO, and BO.  Both AA and AO genes will result in type-A blood, since A is dominant over O.  Therefore, there is a 2 in 4 (or 1 in 2, or 50%) chance of the child having type-A blood.

Answer:

The cell feature that is responsible for making proteins are the ribosomes.

Answer:

B

Explanation:

The breakup of Yugoslavia resulted in genocide because ethnic cultures came into conflict with one another.

The Bosnian War was one of the chapters in the fragmentation of Yugoslavia, also marked by conflicts in Slovenia, Croatia and Kosovo throughout the 1990s. The Bosnian War took place in Bosnia between 1992 and 1995, during the process of fragmentation of the former Yugoslavia .

The new Yugoslavia consisted of six nations: Serbia, Croatia, Slovenia, Montenegro, Macedonia and Bosnia and Herzegovina. Between 1953 and 1980, Tito managed, through dictatorial power, to impose control over the different ethnic groups existing in the Balkans.

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Answer:

The density of a liquid is shown by the object sinking or floating. Therfore, using this information if the object sinks then the object is more dense than the object that floats. When it comes to the density of liquids if the liquid sits on top of the water and does not mix, the liquid is less dense than water. If the liquid sinks into the water and the water sits on top, the liquid is more dense than the water.

Explanation:

Answer:

Waxing gibbous

Explanation:

Answer:

I think that the answer is B let me know if I'm wrong

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Explanation:

The high internal salt concentration prevents the plants from losing water by osmosis. Thus, the correct option is B.

Osmosis can be defined as the spontaneous net movement or diffusion of solvent molecules through a selectively-permeable membrane such as plasma membrane from a region of high water potential to a region of low water potential, in the direction which tends to equalize the solute concentrations on the two sides.

Osmosis helps in achieving the state of equilibrium. In the given experiment, the high internal salt concentration prevents the plants from losing water through the process of osmosis.

Therefore, the correct option is B.

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Brains averaging slightly more than 600 milliliters were found in the earliest fossilized skulls of Homo erectus, which date back 1.8 million years. The species moved slowly up from here, reaching more than 1,000 milliliters.

The average endocranial volume of Homo heidelbergensis, in comparison to the Asian and African Homo erectus, was approximately 1200 cc. The average cranial capacity of modern humans and Neanderthals is around 1400–1500 cc, with the latter group probably having a slightly larger capacity.

In the six million years since Homo and chimpanzees last shared a common ancestor, the size of the human brain nearly quadrupled. However, the volume of the human brain is thought to have decreased since the last Ice Age.

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Increases in muscle tension in the absence of any shortening of the muscle are said to be isometric contractions. The correct option is d.

Isometric contractions occur when the muscle generates tension but does not change in length. During an isometric contraction, the muscle fibers are activated and exert force, but the overall muscle length remains constant. This type of contraction is often seen when trying to hold a heavy object in a fixed position or maintaining a static posture.

In contrast, dynamic contractions involve muscle shortening or lengthening, resulting in movement. Extensions refer to the act of stretching or extending a muscle, which is not applicable in this context.

Therefore, the correct answer is d. isometric.

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Answer:

Explanation:

Mesosfera

Answer:

Troposphere

Explanation:

The order of the layers of the atmosphere, from closest to the ground to furthest away, is as follows:

Troposphere, Stratosphere, Mesosphere, Thermosphere

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Answer: The correct answer is b.

Explanation:

Culture has a significant impact on biology, including the ways in which people interact with one another, their lifestyles, and the foods they eat. Culture, in general, is a term that encompasses all human behavior patterns and social norms, which include things like language, traditions, beliefs, and customs.

culture molds or defines biology:

One of the keyways that culture molds or defines biology is through dietary practices and patterns. For example, many cultures have specific dietary guidelines and restrictions that are followed to ensure good health. In India, for example, vegetarianism is very common due to religious beliefs. Another example is the Japanese culture that places a strong emphasis on consuming fresh and minimally processed foods like fish, vegetables, and rice. These dietary practices have a profound impact on biology, including physical growth and development, cognitive function, and overall health and well-being. Another way culture molds biology is through behavior and lifestyle choices. For instance, in many Western cultures, it is common to sit for extended periods, which can lead to issues such as obesity, diabetes, and heart disease. In contrast, in many African and Asian cultures, individuals tend to be more active and engage in more physical labor, which can contribute to better overall health and lower disease rates. Other examples of culture affecting biology include reproductive behavior, attitudes towards mental health, and the use of natural remedies and medicines.

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Answer: preserve an ecosystem.

Explanation:

         A bird reservation is a place where they protect birds. An example of this is the American Bird Conservancy where they say their mission "is to conserve native birds and their habitats throughout the Americas."

         While this is one specific example, this leads us to the conclusion that the answer is to "preserve an ecosystem."

Answer:

d

Explanation:

The absorption spectrum of a molecule is independent of the excitation intensity because it depends on the molecule's inherent properties and energy levels, rather than the amount of light energy provided.

Step-by-step explanation:

1. The absorption spectrum is a plot of the absorption of light by a molecule as a function of wavelength or frequency.
2. When a molecule absorbs light, it transitions from a lower energy state to a higher energy state. This is called an electronic transition.
3. Each molecule has specific energy levels and can only absorb light of certain wavelengths or frequencies that match the energy difference between these levels.
4. The absorption spectrum is determined by these energy level differences and the probabilities of the transitions.
5. Excitation intensity refers to the amount of light energy provided to the molecule. Increasing the excitation intensity can increase the probability of a transition, but it does not change the inherent energy levels of the molecule or the energy differences between them.
6. Therefore, the absorption spectrum remains the same, regardless of the excitation intensity. It solely depends on the molecular structure and energy levels of the molecule, not the amount of light energy provided.

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Answer:

first 4, then 2, then 1, and lastly 3

Explanation:

First, RNA polymerase binds to the promoter region of a gene on the DNA and initiates transcription. Transcription is the process by which we get mRNA (coding RNA) which is used as a template for protein synthesis. Then, in transcription, the resulting mRNA undergoes modification and maturation. This  involves removal of introns, addition of 3'-poly-A tail and 5'-cap. Introns are sequences that do not code for protein and are hence removed. The structure that removes introns is the spliceosome. Thirdly, mature mRNA travels to the cytoplasm. Ribosome (composed of rRNA) binds to mRNA and tRNA to start the process of protein synthesis. The process of formation of protein is called translation. Lastly, the primary structure of protein may undergo folding to form a tertiary structure.

Answer:

Polysaccharides

Explanation:

Polysaccharides are the most abundant Carbohydrate found in food. They are long chain polymeric carbohydrates composed of monosaccharide units bound together by glycosidic linkages.

Answer:

allele

Explanation:

An allele can be defined as a variant of a gene localized at the same locus or chromosome position. These gene variants may encode the same protein (when different alleles encode the same protein sequence) or different protein variants (when nucleotidic differences encode distinct protein sequences). It is important to note that the diploid organisms (like humans) have two alleles for each gene, which are localized on homologous chromosomes.

A version of a gene is called an allele. Genes are sections of DNA that hold the instructions needed to make certain proteins or useful RNA molecules. Hence the correct option is A.

Alleles are distinct versions or variants of a gene that can cause changes in the trait or feature the gene controls.

Alleles are found at specific locations on chromosomes known as loci. Each gene is present in two copies in humans, one from each parent.

As a result, a person might be heterozygous (having two copies of the same allele for a given gene) or homozygous (having two copies of two distinct alleles).

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There are 64 different possible combinations of chromosomes in the gametes of this species.

In this case, the diploid number of chromosomes (2n) is given as 12. During meiosis, the chromosome pairs separate, and each resulting gamete receives only one copy of each pair. Therefore, each gamete will have n or 6 chromosomes.

To determine the number of different combinations of chromosomes in the gametes, we can use the formula 2^n, where n is the number of chromosomes in a single set. In this case, n is 6, so we have:

2^6 = 64

Hence, the correct answer is E.

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Answer: ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, or between two atoms with sharply different electronegativities

Explanation:

Answer:

the source

Explanation:

The energy source that drives the processes that make up the water cycle is the earth's sun. Thus, the correct option for this question is D.

The water cycle may be defined as a biogeochemical cycle that significantly expresses the continuous and gradual movement of water within the Earth and atmosphere. It is a complex system that includes many different processes.

The process that includes the water cycle are as follows:

The Sun definitely provides the energy that drives the water cycle on Earth. Energy from the sun and the force of gravity drive the continual movement of water between pools. The sun's energy causes liquid water to evaporate into water vapor. Evapotranspiration is the main way water moves into the atmosphere from the land surface and oceans.

Therefore, the energy source that drives the processes that make up the water cycle is the earth's sun. Thus, the correct option for this question is D.

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The node that is unconnected to any child nodes is referred to as a "leaf" node in the context of tree theory. It is frequently shown as the terminal node or endpoint in a tree structure.

When comparing the available options, "/usr/local/linuxgym-data," "/home/student," "/bin," and "none of these choices," it is unclear which directory is being referenced to as a leaf node. We need to understand the tree's structure and the connections between the directories in order to recognise a leaf node. It is impossible to tell which directory would be categorised as a leaf node without additional knowledge on the tree topology or the precise connections between these directories.

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When two hybrid grey fur dogs are crossed (Gg) then the resulting genotypes are: FF - 0%, Ff - 50%, ff - 50%

A Punnett square is a graphical tool used in genetics to predict the genotypes of offspring produced by a cross between two parents. It was developed by the British geneticist Reginald Punnett in the early 20th century.

The Punnett square is a square divided into four boxes, with each box representing one possible combination of alleles from the parents. The alleles are represented by letters, with uppercase letters representing dominant alleles and lowercase letters representing recessive alleles. The alleles for one parent are written along the top of the square, and the alleles for the other parent are written along the side of the square.

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Answer:

pollution

Explanation:

The correct word would be pollution.

Pollution can be described as the presence of ecologically harmful substances in the environment.

Littering the ground is considered pollution because it is harmful to the environment in the long term. Harmful chemical in water is outrightly considered pollution because this will hurt the organisms living in the water and rendered the water unusable to those around it.

Answer:

same for m pollution

Explanation:

Answer:Mucous

Explanation:

Answer:

According of what I remember

DNA is vital for all living beings even plants. It is important for inheritance, coding for proteins and the genetic instruction guide for life and its processes. DNA holds the instructions for an organism's or each cell's development and reproduction and ultimately death.

To understand what it means you should find the paragraph where this word is "solar energy". This is the energy that plant absorb. Solar means from sun