Compare and contrast aerobic and anaerobic

Which of the following examples can cause gene flow between populations? a.an increase in predators to a population of zebra b.a volcanic eruption that kills half of a population of mice c.bird droppings that contain seeds from a different location d.a person that sprays a toxin on a group of mosquitoes

Four types of motile cells in human body?

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?