2. about how much of the energy contained originally in the grass is usable by the
lion?
a 10 kg
b 0.1 kg
c 1 kg
od 5 kg

The correct option is B. 0.1

Explanation:

According to the information provided in the question, a zebra eats 10 kg of grass. This zebra is then eaten up by a lion.

Researched have shown that approximately 10% of an energy transfer is made from one trophic level to another. The rest of the energy is lost.

Hence, 10 kg of grass will give :

10/100× 10

= 1% or 1 kg of energy to the zebra

The grass will give

1/100× 10

= 0.1% or 0.1 kg of energy to the lion.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.