Predict how predation might evolve. for example, a parasite might evolve to become less virulent so that it doesn’t kill so many of its host.

Evolution in the Parasitism: Parasites are mostly the microorganisms which lives in other organisms and develops there body as whole inside its host.As a parasite needs the nourishment and resources of its host cell to grow, or develop. But, it can also involves the damage or the destruction of its host cell as whole or the genome of the host cell can be damaged by its efforts.  

Explanation:

Parasite as a predator:

We can simply say, that a parasitic body is much smaller to any other predator but it too consumes all or some of the energy which is the host body posses. As there are some parasites which lives in the gut and the liver of the beings and they get the required energy from the host's body for there own growth and development. The parasites are also involved in changing the cycle of mechanism or function of the host in which it lives inside.

Endoparasites:

The endoparasites requires another body or vessel through which it is transmitted from one point to the other. And the parasites then lives in the body or premises provided by that specific host's body. As the plasmodium which is the protozoa, is transmitted from one body to another with the help of mosquito acting as a vessel for its transmission. Some other types of the endoparasites which grows and damage the host's body are tapeworm,heart-worm, and flatworm in general.

Hyperparasites:

The type of parasites which is also acting as the host for another parasite living inside its body. As we have the example of the, protozoans which are found in the gut of the fleas, while the fleas are again acting as the parasite inside the dog's body.

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%