Question

1. how do greenhouse gases affect earth’s temperature?

a. they reduce solar radiation
b. they increase the albedo effect
c. they trap heat, raising temperatures
d. they block ocean currents

Explanation:

To determine the correct answer, we analyze each option:

• Option a: Greenhouse gases do not reduce solar radiation; solar radiation reaches Earth, and greenhouse gases affect heat retention, not solar radiation reduction.
• Option b: The Albedo Effect is about surface reflectivity (e.g., ice, clouds reflecting sunlight). Greenhouse gases do not increase this effect.
• Option c: Greenhouse gases (like CO₂, methane) trap infrared heat radiated from Earth's surface, preventing it from escaping into space, which raises global temperatures. This matches the greenhouse effect.
• Option d: Greenhouse gases do not block ocean currents; ocean currents are driven by factors like wind, temperature, and salinity differences, unrelated to greenhouse gas action.

Answer:

c. They trap heat, raising temperatures