Which organ is responsible for breaking down nutritious and poisonous substances in the body

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.