Biology, 27.03.2020 16:24, brebun4742
Two groups of tomatoes were grown under laboratory conditions, one with humus added to the soil and one a control without humus. The leaves of the plants grown without humus were yellowish (less green) compared with those of the plants grown in humus-enriched soil. The best explanation for this difference is that .
a. the humus contained minerals such as magnesium and iron, needed for the synthesis of chlorophyll Correctb. the heat released by the decomposing leaves of the humus caused more rapid growth and chlorophyll synthesisc. the humus made the soil more loosely packed, so water penetrated more easily to the rootsd. the healthy plants used the food in the decomposing leaves of the humus for energy to make chlorophyll
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During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing
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Two groups of tomatoes were grown under laboratory conditions, one with humus added to the soil and...
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