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Look at the classification table below.
Livings things
Animals
lion
rose
Jew's ear
bacteria
whale
Hibiscus
toadstool
yeast
Give a suitable heading for Group Q and Group R.
Group Q: ____________________________
Group R: ____________________________
Object
Letter
Ceramic tile
Window pane
Plastic cup
Wine bottle
Joanne collected some water from four different ponds, P, Q, R and S. She also collected some healthy duckweeds. Then she placed the duckweeds into the different containers of water according to the table below.
Source of water
P
Q
R
S
Amount of water
500 ml
Initial number of healthy duckweeds
10
Number of duckweeds 2 days later
6
8
0
Number of healthy duckweeds 4 days later
3
(a) Which pond is the most suitable for the survival of the duckweeds?
(b) What are two possible reasons why the duckweeds did not survive in the other ponds.