Question

1. choose the correct answer.

most scientists think that global warming is caused by ____.
natural events
human activities

1. choose the correct answer.

trees help clean the air by ____ carbon dioxide.
releasing
absorbing

Explanation:

Question 3

Most scientific research indicates that human activities like burning fossil fuels, deforestation, etc., are the primary drivers of global warming, while natural events have a relatively minor role in the current rapid warming trend.

Trees perform photosynthesis, during which they take in (absorb) carbon dioxide from the air and release oxygen. Releasing carbon dioxide would not help clean the air.

Answer:

human activities

Question 4