by which process do plants obtain carbon from the atmosphere?\nphotosynthesis\ncellular respiration\ndecompos…

Brief Explanations:

Photosynthesis is the process by which plants use sunlight, carbon - dioxide from the atmosphere, and water to produce glucose and oxygen. Cellular respiration is the process by which cells break down glucose to release energy. Decomposition is the breakdown of dead organisms. Consumption refers to organisms eating other organisms. Plants obtain carbon from the atmosphere through photosynthesis.

Answer:

photosynthesis