The best statement that describes saturation will be "saturation is reached when the amount of water vapor in the air has reached the maximum amount." Saturation can also be when the ground has to much water and can't absorb anymore. The correct answer is D.
I believe the answer is legumes
Water diffusion is called osmosis. Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane<span>. Carbon dioxide, </span>the<span> byproduct of </span>cell<span>respiration, is small enough to readily diffuse out of a </span>cell<span>. Small uncharged lipid molecules can </span>pass through the<span> lipid innards of </span>the membrane<span>.</span>
You would expect 25 Kcal of energy stored in trophic level 4.
<u>Explanation:</u>
Energy flow in the ecosystem follows 10% law according to which 10% of the energy in the lower trophic level is transferred to the next trophic level.
In this example grass belongs to the first trophic level, producers.
Energy of grass=25000Kcal
Energy transferred to trophic level 2=10% of 25000=2500
10% of the energy in trophic level 2 is transferred to trophic level 3.
Hence energy at trophic level 3=10% of 2500=250Kcal
Energy transferred to trophic level 4=10% of energy in trophic level 3
=10% of 250=25Kcal
Energy to be stored in trophic level 4=25Kcal