Answer: It's c
Explanation:
When we need more oksigen our body reacts and make heart to beat more faster so there will be more blood circulating and will compensate the dyoksid carbon that is produce with oksigen
A. They live in the polar regions of the Northern and Southern Hemispheres.
Answer:
logging, and oil exploration
Explanation:
Invasive species or environment
Carbohydrates
lipids
amino acid
nucleic acid ?