Planting trees has been identified as a way to reduce the greenhouse effect and lessen the adverse effects of climate change. However, more trees might actually cause a warming effect in some environments.

In which environment, the poles or the equator, are trees more likely to have a warming effect, and why?

Responses

at the equator; trees are the primary reason the equator is hot as they are able to absorb solar radiation
at the equator; trees are the primary reason the equator is hot as they are able to absorb solar radiation

at the poles; trees have a lower albedo than the surrounding snow or soil environment and would absorb more solar radiation
at the poles; trees have a lower albedo than the surrounding snow or soil environment and would absorb more solar radiation

at the poles; trees at the poles are less efficient in removing atmospheric carbon dioxide than those at the equator
at the poles; trees at the poles are less efficient in removing atmospheric carbon dioxide than those at the equator

at the equator; trees at the equator tend to be tightly packed together, meaning that they are better able to trap and store solar radiation

at the equator; trees at the equator tend to be tightly packed together, meaning that they are better able to trap and store solar radiation

Options:

1. at the equator; trees are the primary reason the equator is hot as they are able to absorb solar radiation
2. at the poles; trees have a lower albedo than the surrounding snow or soil environment and would absorb more solar radiation
3. at the poles; trees at the poles are less efficient in removing atmospheric carbon dioxide than those at the equator
4. at the equator; trees at the equator tend to be tightly packed together, meaning that they are better able to trap and store solar radiation

The correct response is number 4: at the equator; trees at the equator tend to be tightly packed together, meaning that they are better able to trap and store solar radiation.