Answer:
A portion of the Earth's atmosphere that protects the Earth from radiation
The jet stream flows west to east
Answer:
1. Circulatory System
2. White Blood Cells
3. Capillaries
4. Vein
5. Carbon Dioxide (CO²)
6. Circulatory System
7. Immune System , Fights
8. Red Blood Cells
9. Gas Exchange
10. Transport
11. Lungs
12. Artery, Heart and Lungs
13. Heart
14. Important Plant
15. Alveoli
Answer:
alleles are different versions of a gene
They are considered invasive because they out-compete native fishes for resources