Answer:
the variety of life in the world or in a particular habitat or ecosystem
Explanation:
you silly goose
Answer:
ll. Chlorine
Explanation:
Inbiochemical systems are oxygen (3.44) and nitrogen (3.04) while carbon (2.55) and hydrogen (2.22)
Answer:
Dry air is a mechanical mixture of nitrogen, oxygen, argon and several other gases in minor amounts.
Explanation: