The peppered moth provides a well-known example of natural selection. The light-colored form of the moth was predominant in England before the Industrial Revolution. In the mid-nineteenth century, a dark-colored form appeared. The difference is produced by a dominant allele of one gene. By about 1900, approximately 90% of the moths around industrial areas were dark colored, whereas light-colored moths were still abundant elsewhere. Apparently, birds could really find the light morhs against the soot-darkened background in industrial areas and, therefore, were eating more light moths. Recently, use of cleaner fuels has greatly reduced soot in the landscape, and the dark-colored moths have been disappearing.

1.What forces are causing evolutionary change in these populations?
2. Should the two forma be considered separate species?
3. How would you determine if these are separate species?
4. Give a prediction for what future generations of moths will look like and explain why.

Answer:

Explanation:

Grasses, shrubs, trees, mosses, lichens, and cyanobacteria are some of the many producers found in a grassland ecosystem.

Answer:

meiosis produced gametes

Explanation:

During sexual reproduction, meiosis generates genetic variation in offspring because the process randomly shuffles genes across chromosomes and then randomly separates half of those chromosomes into each gamete. The two gametes then randomly fuse to form a new organism.

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Answer:

the plant is gaining minerals, sugars, and water

Explanation:

Answer:

The solar nebula theory explains that planets are formed by solid bits of matter. What that matter is entirely dependent on the gas and substances available.

Explanation:

Answer and Explanation:

Regarding genetics, the results of the study show that the mother's genetic material does not influence the behavior of rats in times of stress or in the biological responses of rats to these stressful moments. This is because the mice inherited their mothers' genes, but did not show the same results in a stressful situation when they were raised with different mothers.

Regarding epigenetics, however, we can see that the mothers' behavior in relation to the care of rats managed to provoke epigenetic changes that prevented or stimulated the expression of genes linked to stress, in these rats. The rats that were raised with attentive mothers showed a low expression of stress-linked genes, regardless of the biological mother they had. In addition, it is possible to notice that this modification is permanent, since the rats presented this same type of response throughout their lives.

Answer:

Empirical evidence is information acquired by observation or experimentation.

Explanation:

I hope it will help you

Answer:

false

Explanation:

Answer:

The brain controls what you think and feel, how you learn and remember, and the way you move and talk. But it also controls things you're less aware of — like the beating of your heart and the digestion of your food.

Think of the brain as a central computer that controls all the body's functions. The rest of the nervous system is like a network that relays messages back and forth from the brain to different parts of the body. It does this via the spinal cord, which runs from the brain down through the back. It contains threadlike nerves that branch out to every organ and body part.

Explanation:

If you brain does not, or is unable to perform multiple tasks automatically, you could have trouble breathing on your own, your heart could have problems, even your thought process, movement, and digestion could malfunction. Which could cause a multitude of complications.

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Answer:

Skeletal

Explanation:

Answer:

Drawbacks: Veterinary school is long and extensive, some surgeries can take hours, sometimes you may get an uncooperative animal, you might have to deal with putting an animal down, which can be hard. You also might be scared for live with graphic images, lol.

Benefits: Vets get paid a lot, they help animals, they help animals live the best life, people are VERY appreciative of the work they do for animals, they are always around animals, so they may see the cutest puppies!

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Answer:

Grass and tree

A producer is a living thing that makes its own food. All food chains begin with producers.

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The Paleozoic Era began approximately 550 million years ago and ended approximately 252 million years ago.

The Paleozoic Era is a geological epoch that lasted about 541 million years and ended about 252 million years ago.

It is also known as the "Age of Invertebrates" because it witnessed the rise and dominance of numerous invertebrate groups, including trilobites, brachiopods, and ammonites.

From oldest to youngest, the Paleozoic Era is divided into six periods: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian.

Many significant events in the evolution of life on Earth occurred during this time period, including the Cambrian period's explosion of diversity, plant and animal colonization of land, and the emergence of reptiles and insects.

Thus, the answer is 550 million years ago.

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Flowering plants reproduce sexually through a process called pollination. The flowers contain male sex organs called stamens and female sex organs called pistils. Cross-pollination happens when the wind or animals move pollen from one plant to fertilize the ovules on a different plant.

Answer:

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there is long  term storage for nuclear  waste

Answer:

All cells in the body need to have oxygen and nutrients, and they need their wastes removed. These are the main roles of the circulatory system. The heart, blood and blood vessels work together to service the cells of the body.

Explanation:

Answer: 1, 5, 2, 3, 4.

Explanation: Using process of elimination layer four should be the oldest and the only one that has layer four last is number 2. Therefore I assume it is number 2.

A mutation scenario that will lead to natural selection is one that causes a specific variation within the population. Thus, the correct option for this question is C.

A mutation may be defined as a type of process that significantly involves sudden, stable, and inheritable changes in the genetic material of an organism. The organism that undergoes mutation is called a mutant. The agent of mutation is called mutagen.

According to the context of this question, the process of mutation never causes a positive influence on the organisms, but with respect to time organisms become adapted or habitual.

A Mutation may be random and spontaneous so, it does not always involve an inactivated gene being reactivated. It sometimes involves the introduction of a new gene that facilitates specific functions.

Therefore, a mutation causes a specific variation within the population is a mutation scenario that will lead to natural selection. Thus, the correct option for this question is C.

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Answer:

C

Explanation:

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Answer:

2

Explanation:

Its 2 because it can be absorbed

Answer:

deep snow melting not 100% sure tho

Answer:

C .

Explanation:

Answer:

Persistent item c

Answer:

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The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth.

Answer: dna replication happens in interphase before the mitosis

Explanation: During interphase the cell’s DNA inside the nucleus replicates forming two strands of DNA or chromosomes. In the interphase the DNA replicates in the S phase. Don’t confuse with G1 since in G1, which comes before S phase, replicates the cellular contents needed for this process

Answer:

The second option

Explanation:

The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. That is why cells are so small.

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Answer:

Genotype

Explanation:

A genotype is represented by two letters, called alleles, and describes the genes of an organism. Phenotype means the physical characterisitics of an organism. Chromosomes and appearance are irrelevant to this question. Hope it helps :)

Answer:

C) genotype

Explanation: I took the test

Answer:

mm yes tre.........

Explanation:

Answer:

Book lungs are within small openings in the abdomen of the arachnid. The book lungs themselves consist of a series of haemolymph filled plate-like structures. Between the plates there is an air space and this allows air to circulate around the plates. Gaseous exchange then occurs through the surface of the plates.

Answer:

menstration period is when a woman's body releases tissue it no longer needs so then the girl bleeds (usually for 7 days) and then every month or so (different for all girls) the uterus lining gets thicker to prepare for a fertilized egg if the woman becomes pregnant. :)