The correct answer is the last one: Decreased variation in tail feather color because the only reason for variation was selection pressure.
If the female peacock were to base her selection criteria on something other than the colors of the male's tail feathers, the latter would not play such an important role anymore and therefore there would no longer be the pressure of needing to have the brightest, most variant and vibrant colors.
Answer:
I believe it's a Core-fusion star.
Explanation:
<u>ANSWER:</u>
Scientists are now of the opinion that life originated from inorganic molecules.
<u>EXPLANATION:</u>
- Scientists now think that "life on earth" originated around 3.5 to 3.9 million years ago.
- According to scientists, "building blocks of life"(amino acids) were first formed and these combined to form the compounds essentially needed for life on earth.
- There are many scientists who also think that the first organic molecules on earth came from meteorites.
- There are however many scientists who also think that some of the "building blocks of life" may have been formed abiotically on earth.
Answer:
<em>The highest grade metamorphic rocks will be formed at high temperatures and high pressures.</em>
Explanation:
Metamorphic rocks can be described as the type of rocks which are formed by a change in the form of the existing rocks. In other words, metamorphosis of igneous, sedimentary or existing metamorphic rocks leads to the production of metamorphic rocks. High temperature and pressure are required by the rocks to change its form and develop into metamorphic rocks. Temperatures usually more than 320 degree Celsius are required for high-grade metamorphism.
