As the sun shines on Earth, plants use its energy to complete the process of photosynthesis. Energy is transformed during the process into chemical energy in the form of sugars, such as carbohydrates. However, the energy available at top consumers is much less than that produced by autotrophs. Why is this so?

There are fewer top consumers than producers in a food web.

There are more producers than consumers in the food web.

Primary and secondary consumers compete for food.

Most of the energy is used for life's processes.