Question

energy flow begins with which of the following?
oxygen cycle
decomposers
plants
photosynthesis

Explanation:

In an ecosystem, energy flow starts with the process of photosynthesis. Plants use sunlight, carbon - dioxide and water to produce glucose and oxygen through photosynthesis, capturing solar energy and converting it into chemical energy. This energy is then passed on to other trophic levels. The oxygen cycle is related to the movement of oxygen in the environment, decomposers recycle nutrients after organisms die, and plants are the organisms that perform photosynthesis. The key starting - point of energy flow is the process of photosynthesis.

Answer:

Photosynthesis