The first line of defense is skin, since it is the epidermis (top layer of skin) that protects all internal fluids and structures.
The answer is true. It is because the cohort studies focuses
on investigating the disease in which it causes it and to identify the risk
factors that may be link to it. They start in advance in which they will likely
start of measuring exposure of the person in the disease and how it was
developed.
Answer:
Removing prey from the ecosystem caused the predator population to decrease. This is because if there is no pray then the predators will have no food. The predators may even have to eat each other to survive, thus further decreasing their population.
Explanation:
A Competition i think hope it helps
Answer:
viruses are actually partially living
they are living when they are in a body other than that they are non living
they are the only thing scientists have discovered that is on the border line of non living and living. they are mostly considered non living(google)
