I agree with this statement as there are 4 layers of the Earth such as the <span>inner core, outer core, mantle and crust. Which is why i agree
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Can you tell me what I'm supposed to be answering? I need more details please.
Answer:
The mechanism that Darwin proposed for evolution is natural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.
Explanation:
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. ... Variation exists within all populations of organisms.
Producers are found at the bottom of the energy pyramid because they take in the sun's energy and convert it to large amounts of plant energy.Therefore, animals on the next level will gain energy from eating the plants directly and then the energy will continue to pass on from level to level as the food chain continues.