Two graphs regarding a population of land snails are shown below.

Question

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Which of these conclusions can be made using the two graphs?

a
Land snails that weigh more than 20 mg live longer than land snails that weigh less than 20 mg.
b
Land snails that weigh 25 mg are eating land snails that weigh 5 mg.
c
Heavier land snails migrated out of the area between 2000 and 201
d
A weight of 5 mg has become a disadvantage for land snails living in this environment.

Answer 1

a
Land snails that weigh more than 20 mg live longer than land snails that weigh less than 20 mg.