Question

What organisms apart from algae would have needed to be present to remove carbon dioxide from the early atmosphere??

Answer 1

plants in general I think. 
photosynthetic organisms.

Answer 2

Green plants are the organisms apart from algae would have needed to be present to remove carbon dioxide from the early atmosphere.

What is Photosynthesis?

This is defined as the process in which green plants manufacture their food in the presence of sunlight.

They use carbon dioxide and water to produce glucose and oxygen which is why green plant is the most appropriate choice.

Read more about Photosynthesis here https://brainly.com/question/19160081

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