Greenhouse gases are those that:
Correct answer: C. Prevent heat to escape
- A. Prevent entry of ultraviolet rays
- B. Prevent rainfall
- C. Prevent heat to escape
- D. All given options are correct
Explanation
Greenhouse gases are gases in Earth's atmosphere that trap heat. They let sunlight pass through the atmosphere, but they prevent the heat that the sunlight brings from leaving the atmosphere. The other options are incorrect. Ultraviolet rays are not prevented by greenhouse gasses, and in fact, they can be harmful to living organisms if not filtered out by the ozone layer. Greenhouse gases also do not prevent rainfall, but they can indirectly affect precipitation patterns through their impact on global temperatures and weather patterns.
This question appeared on the NUMS 2015 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Ecosystems
An ecosystem consists of organisms interacting with one another and with abiotic factors such as light, water, soil and temperature. The topic covers populations and communities, food chains and webs, trophic levels, ecological pyramids, energy flow, nutrient cycles and ecological succession.
Practise Man and His Environment
382 free Man and His Environment MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.