An orgainism is endangered when it is close to extinction...this happens when an organism is hunted down for its meat or other properties...
1. For which of the following activities might you want to hire a chemist?A. testing a sample of water from a well
2. Which of the following procedures involves a physical change in one of the substances?
D. grinding chalk into a fine powder
3. You have three molecules of glucose (3C6H12O6). How many oxygen atoms do you have?
C. 6
Explanation:
they used the amino acid to find the DNA base sequence
Antigens determine blood type
