Answer:
water, air , nutrients
Explanation:
water for circulation , air for breathing , nutrients for growth
Answer:
N
Explanation:
Both carbohydrates and lipids contain Carbon, Hydrogen, and Oxygen. However, all proteins have Nitrogen as well.
Net energy is the amount of that is actually useable from an energy resource. Net-energy ratio is the ratio of the amount of useable energy from a resource and the amount it takes to make that energy useful. ... An energy source with high energy efficiency provides a lot of work for the amount of energy used.
Argyroneta aquatica because it is the only species of spider that lives entirely uder water
