What is the difference between
autotrophs and heterotrophs​

This organism is not capable of performing photosynthesis. (horseshoe crab) true false

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite