Article physical ac
c lasses
jeremiah kennedy
ction
a plant disease infected a field of wild blackberries. the first year many of the plants died from the disease. the next year fewer
plants died. the third year, almost none of the plants died of the disease.
why did fewer plant die from the disease each year?
a. none of the plants in the species were resistant to the disease.
b.
plants that were resistant to the disease lived and reproduced.
c.
all of the plants in the species were resistant to the disease.
od. over time, the species became less resistant to the disease.
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