Answer:
Acids lower the pH of freshwater and bases raise the pH of freshwater.
Explanation:
If a substance is too basic, it could possibly harm another organism living in the freshwater source. If it's too acidic, it could possibly make unsafe living conditions in that environment. That's why you should always check the pH level in the fish tank and in the pool to see what the pH is. A pH of 6 - 8 is always safe for fish, whereas a pH of 5 - 9 is safe for pools.
Explanation:
Acids: 0 - 6
Neutral: 7
Bases: 8 - 14
HIV crossed from chimps to humans in the 1920's in what is now the Democratic Republic of Congo. This was probably as a result of chimps carrying the Simian Immunodeficiency Virus (SIV), a virus closely related to HIV, being hunted and eaten by people living in the area.
Answer:
The acronym FDA stands for Food and Drug Administration
Explanation:
The Food and Drug Administration (FDA) is an agency that is responsible for the control, review and acceptance of all products that have to do with food and health of humans and animals. FDA controls drugs, biological products —including blood products— medical equipment and material, and food, both for human and animal use.
FDA is based and operates in the United States and reports to the Department of Health and Human Services. The scope of regulations issued by FDA is wide, being accepted in other countries as part of their drug and food control programs.
