Environmental Chemistry: Atmosphere and Water - SS2 Chemistry Past Questions and Answers - page 1

Which of the following gases is the most abundant in Earth's atmosphere?

Approximately what percentage of Earth's atmosphere is composed of oxygen?

Which layer of the atmosphere is characterised by a decrease in temperature with increasing altitude?

The ozone layer is located in which layer of the atmosphere?

Which of the following greenhouse gases is primarily responsible for the greenhouse effect?

Which layer of the atmosphere is characterised by the presence of the auroras (Northern and Southern Lights)?

The ozone layer plays a crucial role in:

Which of the following layers of the atmosphere contains the majority of the Earth's weather phenomena?

The composition of the atmosphere remains relatively constant up to which layer?

Which of the following is not considered a variable component of the atmosphere?