16. immunity that can be acquired naturally, such as when we are exposed to a bacterial or viral infection (such as measles), or that can be acquired artificially, such as when we receive a vaccine, is known as

Adaptive immunity

Explanation:

The adaptive immunity is also known as acquired immunity. It is a sub system of the overall immunity.

It can defined as the immunity which is not present in the body when we are born. It develops in the body when it is exposed to the pathogens no matter it is natural or artificial.

The acquired immunity can develop in the body and makes the body susceptible to infections and develops prevention for the next time when the body will be exposed for the next time.

lets get this bread mom

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.