What type of mass movement occurs when rock fragments or rocks fall freely through the air?

When the rock fragments or rocks freely fall through the air, then, it is known as the rockfall. The mass movement of the rocks downwards freely when they are separated from the slope makes them slide, bounce, and roll. These rocks  may vary in their sizes from few cubic meters to multiple thousand cubic meters.

Hence, the answer is 'rockfall'.

Carbohydrates are one of the most important sources of energy for the living organisms. They serve as efficient energy fuels for the athletes who require energy for vigorous muscle contractions during their training.

Atheletes require lots of complex carbohydrates ( like starch) during training because the already stored form ( glycogen in liver and muscles) is broken down into simple sugar that is glucose, which is metabolized to fulfill the energy requirements. They allow to compete for longer times and do not cause fatigue in athletes.

Therefore, lots of complex carbohydrates are required in their diets.