Which of the following are characteristics of some or all prokaryotic cells? O organelles
o myleold region
multicellular
nucleus

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

How does natural selection change thephenotypes within a population over time?

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?