Which gases contribute to the greenhouse effect? A. nitrogen and helium

B. carbon dioxide and methane

C. carbon dioxide and helium

D. nitrogen and methane

B. Carbon Dioxide And Methane

Explanation:

Greenhouse gases include carbon dioxide, methane, nitrous oxide and other gases that accumulate in the atmosphere and create the heat-reflective layer that keeps the Earth at a livable temperature.

The answer is B

Explanation:

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pls mark brainlest

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

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