Question

3. A greenhouse is a brick house used to grow plants in cold areas.
4. A rise in sea level due to global warming will cause flooding of
mountainous areas.
5. Light year is used to measure the thickness of the ozone layer.
glas
low level aren
ebalusan unit
d. oxygen
B. Tick (~) the correct answers.
1. Which of these gases is found in the lower layers of the atmosphere?
a. helium
b. hydrogen
c. neon
2. What is the lower part of the thermosphere called?
a. troposphere b. ionosphere
c. exosphere
3. Which of these is a greenhouse gas?
a. carbon dioxide
b. oxygen
c. hydrogen
d. mesosphere
d. nitrogen
d. industrial process
4. Which of these activities do not produce greenhouse gases?
a. energy use b. agriculture
c. afforestation
5. Which of these gases is responsible for the depletion of the ozone layer?
a. argon
b. methane
c. water vapour
d. chlorofluorocarbons
C. Write True or False.
1. The composition of air in the atmosphere is uniform.
2. Helium is found in the exosphere because it is a light gas.
un to greenhouse gases.​

Answer 1

Answer:

Please ask one by one all ques

Answer 2

Answer:

mark brainiest and follow

Explanation:

A.

1. f

2.f

3.f

B.

1.c

2.b

3.co2

4.b.

5.d.