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Papessa [141]
3 years ago
8

A student performed an experiment to see if water temperature affects the level of activity

Biology
1 answer:
Sholpan [36]3 years ago
3 0

Answer:

D

Explanation:

A is not viable as altering the Ph would affect the snails, and would not focus on how temperature affects the snails

B Expanding the tank would indeed give the snails more room to move around in , but in questions like these, you need to choose the best fit for the question. The larger tank also wouldn't really make the conclusion more valid

C Carrying out the experiment for a shorter length of time would only decrease the amount of data you would get to analyse to determine whether there was  an impact on the snails

D Using a larger number of snails would indeed make the conclusion more valid. This is because the number of snails that are tested increases the validity of a claim of a trend. If 10 snails instead of 5 snails are more active in warmer water, the validity of the claim is higher and more believable.

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