How do you think a code consisting of so few characters can encode the instructions for building thousand of different proteins?

Every gene has a code which is responsible for the formation of thousands of protein necessary for normal functioning of the cell.

Explanation:

In genes codes are present. In these codes have information about the formation of protein. Genes is just like a recipe book which contains information about making different types of protein which is necessary for the cell. So codes in the genes are work according to the instruction of the cell for making a specific protein. These codes contains characters which is sent by the genes to the ribosomes of the cell where protein are formed.

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.