Answer:
Spread
Explanation:
People use envelopes very often. The germs people carry are put into the envelope and then it's sent out to many others.
<span>Cardiovascular heath</span>
Answer:
gene pool or gene frequency
Explanation:
Biological Evolution has to do with how a population's gene pool changes over time.
But planning and maintaining But first you can help to prevent some of the most serious environmental land and aquatic habitations reduce the quality of water for human consumption buffers protect the environment