Which layer of the atmosphere has the highest temperatures?
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Thermosphere
Answer: d) Thermosphere

Which layer of the atmosphere is most affected by human activities?
a) Stratosphere
b) Mesosphere
c) Thermosphere
d) Troposphere
Answer: d) Troposphere

Which gas is a potent greenhouse gas and is released by cattle?
a) Oxygen
b) Nitrogen
c) Methane
d) Argon
Answer: c) Methane

What is the role of the stratosphere in Earth’s atmosphere?
a) Protects from harmful ultraviolet radiation
b) Absorbs heat from the sun
c) Reflects sunlight
d) Traps infrared radiation
Answer: a) Protects from harmful ultraviolet radiation