Contact with animals is a risk factor for pandemic influenza. true or false

What is the first step in a life cycle of a plant reproduce sexually

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

What claim did thorne make? what evidence supported his claim?