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The mice would all be the same size
The mice would all be the same color
The experiment could be repeated with the same mice
Genetic differences would not affect the outcome of the test
The experiment wouldn't cost as much
Use them only on some of his or her plants
Use only the amount recommended
Do not apply chemical fertilizers
Apply as much as possible without damaging roots
Give the plants only tiny amounts
Ostrich, American robin, Norway rat
Beluga whale, black-footed ferret, box turtle
Timber rattlesnake, fence lizard, leopard
African lion, sea otter, herring gull
House sparrow, garter snake, African elephant
A and B only
B and C only
A and C only
HNO 3 (nitric
HCL (hydrochloric acid)
H 2 SO 4 (sulfuric acid)
C 3 H 8 (propane gas)
NaCl (table salt)
H 2 O (distilled water)
CO 2 (carbon dioxide)
NaCl (sodium chloride)
CuO (oxidized copper)
H 2 O 2 (hydrogen peroxide
A gas balloon in which the buoyant force is greater than its weight and air resistance.
A man in a parachute when the air resistance is less than his weight.
An airplane in horizontal flight when the thrust of the engine is equal to the drag of the air.
A ball striking a wall, in which the force of the ball on the wall is equal to the force of the wall on the ball.
A rocket fired straight up, when the engine thrust is equal to the air resistance.
The humidity will remain unchanged.
The relative humidity will decrease.
Precipitation will be released in the form of rain.
Precipitation will be released in the form of hail.
Precipitation will be released in the form of snow.
The timing of the fertility cycles.
The mother's contribution of a Y chromosome.
The "law of averages" finally catching up.
The father's contribution of a Y chromosome.