QUESTION 15
Which equation describes the general process of photosynthesis?
A.
C6H12O6+6H2O + light energy → 6CO2 + 602
B.
C6H12O6 602 → 6CO2+6H2O + energy
C.
602+6CO2 + light energy → C6H12O6+6C02
D.
6CO2 + 6H2O + light energy → C6H12O6 + 6CO₂
QUESTION 16
What percentage of the Earth's atmosphere is nitrogen?
A. 87%
B. 70%
C. 21%
D. 78%
QUESTION 17
The group of bacteria that uses ammonia from decaying organisms to produce nitrates is called bacteria.
A. nitrifying
B. decomposers
C. denitrifying
D. nitrogen fixing
QUESTION 18
Which of this refers to the tiny particles of solids and liquids released into the air when fuels and other materials are not burned properly?
A. Smog
B. Soot
C. Smoke
D. Particulates
QUESTION 19
The overall rise in the average temperature of the atmosphere is known as
A. drought.
B. deforestation.
C. global warming.
D. greenhouse effect.
Answer (2)
Photosynthesis is summarized by the equation 6CO2 + 6H2O + light energy → C6H12O6 + 6O2. Nitrogen makes up 78% of the atmosphere, while nitrifying bacteria convert ammonia into nitrates. Particulates refer to harmful particles in the air due to improper fuel combustion, and global warming is the term for the rise in average atmospheric temperatures. ;
The correct answer for photosynthesis is option D: 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂, with nitrogen making up 78% of the atmosphere. Nitrifying bacteria produce nitrates from ammonia, while particulates are harmful particles released into the air, and the rise in average atmospheric temperature is known as global warming.
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