Question

1. which season can be affected by greenhouse gas effect?

a. summer only b. winter only c. spring only d. all seasons

1. methane is released mainly from?

a. ice caps b. landfills and livestock c. oceans d. crops

1. trapped heat causes earths temperature to?

a. stay the same b. decrease c. increase d. freeze

1. greenhouse gases are found in earths?

a. core b. mantle c. crust d. atmosphere

1. a colder earth would result in?

a. fewer storms b. extreme cold conditions c. no snow d. more sunlight

1. greenhouse gases mainly affect?

a. wind speed b. earths temperature c. earths rotation d. gravity

1. which is a natural source of co₂?

a. cars b. factories c. respiration d. power plants

1. the greenhouse effect is?

a. entirely harmful b. entirely human - made c. a natural process d. a weather event

1. winter storms depend on?

a. atmospheric conditions b. earths core c. ocean salinity only d. moon phases

Explanation:

Question 7 (assuming the first visible question is 7, though text is blurry; let's take a clear one, e.g., Question 13: "Which is a natural source of \( \text{CO}_2 \)?")

• Option A (Cars) and B (Factories) are human - made sources of \( \text{CO}_2 \) (from burning fossil fuels).
• Option D (Power plants) are also human - made sources (usually burn fossil fuels).
• Option C (Respiration) is a natural process where living organisms (like animals and plants during respiration) release \( \text{CO}_2 \).

• Option A: The greenhouse effect is not entirely harmful; it's necessary for life on Earth as it keeps the planet warm.
• Option B: The greenhouse effect is a natural process, though human activities have enhanced it. It's not entirely human - made.
• Option C: The greenhouse effect is a natural process where greenhouse gases trap heat in the Earth's atmosphere, maintaining a temperature suitable for life.
• Option D: The greenhouse effect is not a weather event.

• Option A: Winter storms are weather events that are driven by atmospheric conditions (like temperature, humidity, air pressure systems).
• Option B: Earth's core has no direct relation to winter storms.
• Option C: Ocean salinity alone doesn't determine winter storms.
• Option D: Moon phases don't directly cause winter storms.

Answer:

C. Respiration

Question 14: "The greenhouse effect is:"