Certain white blood cells engulf microorganisms to digest them, as a means of protecting the body from invaders. this process is described as diffusion. pinocytosis. receptor mediated exocytosis. phagocytosis.

phagocytosis

Explanation:

The phagocytosis is a process by which the cells utilizes their plasma membrane to engulf the large particles. The phagocytosis is the part of the immune system of the organism.

The phagocytosis is shown by the white blood cells of the body that encounter the invaders in the body like bacteria, virus, and other foreign particles to engulf and destroy them.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

the species living around the vents are especially good at dispersal.  

deep-sea vent originates on the floor of the ocean when seawater circulates through hot volcanic rocks, usually situated where the new oceanic crust is being produced.  

biological dispersal refers to the movement of species from their location of birth to their site of breeding, or from breeding site to another. similarly, the oceanic dispersal refers to the movement of the species from one land mass to another by sea crossing.