What are the answers to the following multiple choice questions about photosynthesis, atmospheric composition, the nitrogen cycle, air pollution, and global warming?

Here are the answers to your questions:

QUESTION 15
The general process of photosynthesis is described by the equation where carbon dioxide and water, in the presence of light energy, produce glucose and oxygen.
The correct option is D.

$$6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6 + 6O_2$$

QUESTION 16
Nitrogen is the most abundant gas in the Earth's atmosphere.
The correct option is D.

• 78%

QUESTION 17
The group of bacteria that converts ammonia from decaying organisms into nitrates is known as nitrifying bacteria, a key part of the nitrogen cycle.
The correct option is A.

• nitrifying

QUESTION 18
Tiny particles of solids and liquids released into the air from incomplete combustion of fuels are broadly referred to as particulates. Soot is a specific type of particulate matter.
The correct option is D.

• Particulates

QUESTION 19
The overall rise in the average temperature of the Earth's atmosphere and oceans is known as global warming.
The correct option is C.

• global warming