The model shows a progression of complexity in the human body. ?

What is the correct term for the missing location on the model?
A cell
B organ
C organ system
D tissue

What is the following best defines climate?

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

Under which of the following circumstances would natural selection not operate on an organism