Which of these careers require working in dangerous situations, with hazardous chemicals, and/or taking risks?

prison guard
accountant
explosives engineer
waiter

explosive engineers and prison guards

Explanation:

All the rest involve serving people in different ways, not dealing with chemical. The word explosive should have been your first clue.

Prison guards can deal with dangerous inmates and be put in tough situations.

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when atmosphere interacts with biosphere they focuses on on the sources and sinks of green house gases (ghgs) air pollutants, particular matters, water and energy between the earth's surface and the atmosphere. the biosphere affects the climate. the atmosphere and biosphere are in constant interaction with each other, and all living things rely on gases in the atmosphere for life. organisms such as animals take in oxygen gas form the atmosphere to use in every cell of their body for smooth functioning of daily routine exercises.

1 a

2 d

3 a

4 c

explanation: