Julio wants to study the effect of water temperature on the hatching of fish eggs in a lake. which of these experimental designs would be most practical for julio? a. he should put fish eggs in aquariums of lake water kept at different temperatures and observe. b. he should build a computer model of fish eggs in a lake that has many different water temperature settings. c. he should use cameras to observe fish hatching in the lake and temperature probes to monitor water temperature. d. he should take water samples from lakes of different temperatures and observe for eggs and newly hatched fish.

Option A

Explanation:

If Julio wants to observe the the effect of water temperature on the hatching of fish egg in lake. Then he must use water with varying temperature and then he must observe the change in hatching of eggs in lake.

For this experiment to occur, he should put fish into aquarium containing lake water and then he must vary temperatures and observe.

There must be different temperatures that should be observed in order to known the difference.

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