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Unit 4 >
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Samacheer Kalvi - English Medium
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22 cards in this set.
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Identify the fresh water ecosystem.
d. All of them
Producers are_______________
c. Plants
It is a biodegradable waste.
b. Coconut Shell
It is an undesirable change that occurs in air and water.
c. Pollution
Usage of chemical pesticides and fertilisers causes ________ pollution.
b. Water pollution
Primary consumers that eat plants are called __________.
Herbivores
Temperature, light and wind are ________ factors.
Physical
__________ is the process of converting waste materials into new materials.
Recycling
Water pollution can spread __________ and chemicals.
Diseases
The 3Rs are Reduce, __________ and Recycle.
Reuse
Biotic factor
Animals
Sewage
Water Pollution
Fertilizers
Land pollution
Desert
Terrestrial Ecosystem
Smoke
Air pollution
Rabbit-- Carrot-- Eagle-- Snake
Carrot - Rabbit - Snake - Eagle
Human-- Insect-- Algae-- Fish
Algae - Insect - Fish - Human
The Pacific ocean is an example of an aquatic ecosystem.
True
Bacteria and fungi are called decomposers.
True
Human and animal wastes are examples of non-biodegradable waste.
False
Excessive use of pesticides leads to air pollution.
False
In schools, waste management rules say that we should separate waste in two categories.
True
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