All of the following proteins are part of the thin filaments except

Titin protein.

Explanation:

Titin proteins are present in vertebrate striated muscle, and they are playing important role in contraction of striated muscle. It is the largest known protein in humans, after actin and myosin. It is the most abundant protein in muscles and they encoded with the help of TTN gene in humans.

Thin filaments mainly contains three different types of proteins which are known as:

1) Actin.

2) Tropomyosin.

3) Troponin.

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.