They're the only vein that carries oygenated blood
Answers may vary, but the overall trend should show an increase in the percent oil in the mixture at these following percentage:
1st: 1%
2nd: 7%
3rd: 32%
It is noted that the concentration of oil increases with each trophic level.
Answer:
Tropical climates are wet and warm, while dry climates receive little or no rain. 3. ... Earth's five major climate zones are identified by temperature, precipitation, and plant life.
