After studying about recycling, members of miguel’s
biology class investigated the effect...
![subject](/tpl/images/cats/biologiya.png)
After studying about recycling, members of miguel’s
biology class investigated the effect of various
recycled products on plant growth. miguel’s lab
group compared the effect of different aged grass
compost on bean plants. because decomposition is
necessary for release of nutrients, the group
hypothesized that older grass compost would produce
taller bean plants. four flats containing the same
species of bean plants (25 plants/flat) were grown for
5 days. the plants were then fertilized with compost
as follows: (a) flat a: 450 grams of two-month-old
compost; (b) flat b: 450 grams of four-month-old
compost; (c) flat c: 450 grams of six-month-old
compost; (d) flat d: 0 grams of compost. the flats
of beans were planted in the same type of soil. the
plants received the same amount of sunlight and
water each day. at the end of 30 days, the group
recorded the height of the plants in centimeters. what is the flaw in this experiment?
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Answers: 1
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