Question

question 5 of 30
why should people in the northern hemisphere be concerned about rain forests in the southern hemisphere?
a. they help clean the atmosphere of the whole planet.
b. they provide most of the worlds rare wood products.
c. they are the home to some of earths most exotic animals.
d. rain forests have become the center of many social movements.

Explanation:

Rainforests play a crucial role in global environmental balance. Through photosynthesis, they absorb carbon dioxide ($CO_2$) and release oxygen ($O_2$), which helps in cleaning the atmosphere. Since the atmosphere is a global system (not restricted to a single hemisphere), the health of rainforests in the Southern Hemisphere impacts the air quality and climate of the entire planet, including the Northern Hemisphere. Options B, C, and D are more region - specific or focus on less globally - impactful aspects compared to the atmospheric cleaning function.

Answer:

A. They help clean the atmosphere of the whole planet.