Which of the following is not one of the factors that play a role in population growth rate?
a. immigration
b. death rate
c. emigration
d. demography

The images show fossils of a modern bird and two extinct organisms (a tyrannosaurus rex and an archaeopteryx). based on the structure of the three organisms, it can be concluded that . the archaeopteryx and bird have wings, while dinosaurs have limbs. so, it can be concluded that .

Which blood cell spend most of their time in the lymphatic system?

Do you think the gene eef1 alpha1 supports cell theory? explain your response.