I think it is Centrioles
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A secondary source is anything written after the fact
Explanation: Elephants have been extensively hunted for ivory for more than 300 years, natural selection is often proposed as the underlying mechanism for an increase in the proportion of tuskless or small-tusked elephants in a population.
Hello!
"Android" is the term that has been used to describe the fat storage in the upper part of the body.
Answer:
Insects may visit them to collect pollen, but usually are ineffective pollinators and exert little natural selection on the flowers. Anemophilous, or wind pollinated flowers, are usually small and inconspicuous, and do not possess a scent or produce nectar. ... No bright colors, special odors, or nectar. Small.