Answer:
The answer is: 3 tennis balls because there will be 4 ping pong balls used for every model and 12/4=3
Explanation:
Answer:

Explanation:
Science of cultivation, breeding, marketing and arrangement of flowers is called --
(b) floriculture
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1.ATP
2.If a red blood cell is placed in water, water enters the cell by osmosis. Because the membrane is quite weak the cell WILL BURST as the volume and therefore the pressure in the cell increases. Red blood cells shrink when placed in concentrated solutions of sugar as water moves out of them by osmosis. so answer is C
Answer:
C
Explanation:
In conduction, heat moves from areas of more heat to areas of less heat by direct contact. In the atmosphere, conduction is more effective at lower altitudes where air density is higher.
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