47)
Sample Earthworms Humus(decomposed organic matter excreted by earthworms) Water retention...
Social Studies, 29.05.2020 20:57 tatilynnsoto17
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Sample Earthworms Humus(decomposed organic matter excreted by earthworms) Water retention Plant growth
1 Absent Absent Moderate Moderate
2 Present Rich in humus High High
William compared two soil samples to check soil’s ability to support the growth of plants. He had read that plants grow best in soil rich in humus. The experimental data is summarized in the table.
What conclusion can be BEST drawn from the data?
A) Soils rich in humus improve plant growth.
B) Earthworms do not improve the soil’s humus content.
C) Plants will not grow in soils that do not have earthworms.
D) The growth of plants is poor in soil that has decomposed organic matter.
Answers: 2
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The principle that the geoglical processes that we see today have occurred through out earths history is called
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After about 1000 b. c, some people in siberia meaning their lives wre bassed on herding animals. a. pastoral b. collective c. irrigate d. dalits
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What effect did the enclosure acts have on people’s working lives? a. changes brought about by the acts prevented large farmers from taking lands from smaller farmers. b. small farmers could no longer work on common lands and had to move to cities for work. c. peasants started working on enclosed lands and soon became wealthy because of higher wages. d. landowners forced peasants to build roads and bridges as part of the new enclosure laws.
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