Worksheetsgarde 4 , lesson 4
Total questions: 10
Worksheet time: 5mins
Both of human and fish
can breathe in air.
use oxygen gas to breathe in.
to breathe in water.
Fish use...........to breathe in water
tail
eyes
Gills
Gills differ from lungs,
take in oxygen gas.
extract oxygen gas from water.
Gills in fish are considered as
Behavioural adaptation
SStructural adaptation
All of the following human activities can negatively affect the nature, except.
cutting down forests.
removing air pollutants.
farming and clearing lands.
throwing wastes in waterways.
Human activities and bad habits can pollute............of an ecosystem.
air and soil only
soil and waterways only
air and waterways only
air, soil and waterways
Pollution of an ecosystem can affect
plants and animals only.
animals and humans only.
humans and plants only.
plants, animals and humans.
If the environment is slowly changed, plants............ to survive and grow.
must have a taproot
must have buttress roots
must decrease their adaptation
must land their seeds in another better place
From the negative effects of human activities on the human health are
asthma and wounds.
lung damage and wounds.
Human can help restoring ecosystem by all of the following activities, except
replanting the cleared forests.
removing air and water pollutants.
producing more factories exhausts.
preserving existed plants and animals.
