

Nutrient Cycling and Ecosystem Processes
Interactive Video
•
Biology
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is nutrient cycling crucial for ecosystems?
It reduces the need for sunlight.
It helps in the formation of new species.
It prevents the depletion of essential elements.
It increases the population of predators.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary source of carbon in the carbon cycle?
Methane
Nitrogen gas
Oxygen
Carbon dioxide
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do plants contribute to the carbon cycle?
By absorbing methane from the atmosphere
By converting carbon dioxide into organic molecules
By releasing carbon dioxide during photosynthesis
By breaking down organic matter into carbon dioxide
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a significant consequence of adding too much phosphorus to water bodies?
Increased oxygen levels
Formation of new land masses
Decreased plant growth
Eutrophication
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which form of phosphorus is absorbed by plants?
Organic phosphate
Inorganic phosphate
Phosphine gas
Phosphorus pentoxide
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main reservoir of nitrogen in the nitrogen cycle?
Soil
Water bodies
Rocks
Atmosphere
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What process converts atmospheric nitrogen into a form usable by plants?
Nitrogen fixation
Respiration
Denitrification
Photosynthesis
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