Tick (✔) the correct option.
1. These days, ______ threaten our environment.
(a) Gas emissions
(b) Smoke
(c) Both a. and b.
2. This causes ______ in the environment, which harms our surroundings.
(a) pollution
(b) water logging
(c) storms
3. These cause ______ effect in the environment, which harms our surroundings.
(a) Bluehouse
(b) Greenhouse
(c) Yellowhouse
4. This effect causes the earth to warm up, which is known as ______.
(a) World heating
(b) Global warming
(c) None of these
5. Pollution also leads to ______ in the rain. This damages aquatic life, plants and crops.
(a) Bases
(b) Acid
(c) None of these
6. It also causes damage to the ______ layer of the atmosphere.
(a) Troposphere
(b) Stratosphere
(c) Ozone
7. This layer protects us from the harmful ______ rays of the Sun.
(a) Ultra-violet
(b) Chemical
(c) Both of these
8. Chemicals such as ______ destroy this protective layer by making holes in it.
(a) Hfs
(b) CFCs
(c) BVs
9. The biggest such hole is over ______.
(a) Australia
(b) Antarctica
(c) Africa
10. The scientists who study how plants and animals depend on their surroundings and what effect the surroundings have on them are called ______.
(a) Researchers
(b) Ecologists
(c) None of these
Answer (2)
The correct answers for the questions include both gas emissions and smoke as threats to the environment, pollution as a harmful substance, and the greenhouse effect leading to global warming. The ozone layer protects us from harmful ultra-violet rays and is damaged by CFCs, particularly over Antarctica. Ecologists study the relationship between living organisms and their environment.
;
Both gas emissions and smoke contribute significantly to environmental pollution, affecting air quality and climate changes.
This causes ______ in the environment, which harms our surroundings.
Correct option: (a) pollution
