Answer:
A vaccine activates our immune system without making us sick. Many dangerous infectious diseases can be prevented in this simple and uncostful
drug .Vaccines have eliminated some of the most dangerous, fatal diseases in human history.
The food chain that would include an aphid include:
- Plant ---> Aphid ----> Birds
- Plant ---> Aphid ----> Spiders
- Plant ---> Aphid ----> Bat
<h3>What is a food chain?</h3>
A food chain is a chart that shows how food is transferred from producers to consumers.
Producers are plants as they are responsible for producing food from inorganic materials using the Sun's energy.
Consumers depend on plants and other organisms.
The food chain that would include an aphid include:
- Plant ---> Aphid ----> Birds
- Plant ---> Aphid ----> Spiders
- Plant ---> Aphid ----> Bat
Learn more about food chain at: brainly.com/question/19066362
A pollutant is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource.
Hello,
An increase in pollution [could] lead to a decrease in <span>genetic variation in a population of tuna.
Faith xoxo</span>
So in order to form a new organism, two gametes -- the sex cells, sperm and egg -- must fuse, further mixing the genes to produce more genetic diversity. Asexual reproduction is one organism dividing into two organisms without shuffling its genes, so the offspring has the same version of genes as did the parent.
