15
Biology
Our Environment
337+ practice questions available
Sample Practice Questions
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1
Medium
The process of converting waste materials into new products to prevent resource waste is called:
AReusing
BReducing
CRecycling
DDecomposing
2
Medium
Saprophytes obtain nutrition from:
ALiving organisms
BDead and decaying organic matter
CSunlight through photosynthesis
DInorganic chemicals
3
Hard
A village generates 100 kg of waste daily: 60% is biodegradable, 25% is recyclable, and 15% is non-recyclable non-biodegradable. If composting and recycling are implemented, how much waste goes to the landfill?
A100 kg
B60 kg
C25 kg
D15 kg
4
Easy
An ecosystem consists of both biotic and ________ components.
APhysical
BChemical
CAbiotic
DInorganic
5
Medium
Biological magnification is most prominent in ________.
APlants
BHerbivores
CTop carnivores (including humans)
DDecomposers
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