The natural cycling of oxygen between organisms and their environment is most directly accomplished through which
ofthe following pairs of processes?

Natural selection acts on populations through a specific trait. which statement must be true about that trait? question 6 options: the trait is passed on genetically to the next generation. the trait has little impact on survival. the trait is the same for all organisms. the trait is resistant to mutations.

Identify the missing parts of the carbon cycle

Which group of algae is characterized by unicellular organisms and includes some members that would be better classified as zooflagellates? euglenophytes red algae sporozoans green algae