How do water and wind affect bare soil? Define and describe the process of erosion
What will be an ideal response?
Erosion is "the process of soil and humus particles being picked up and carried away by water or wind." "When soil is left bare and unprotected, however, it is easily eroded. Water erosion starts with what is called splash erosion, as the impact of falling raindrops breaks up the clumpy structure of the topsoil. The dislodged particles wash into spaces between other aggregates, clogging the pores and thereby decreasing infiltration and aeration. The decreased infiltration results in more water running off and carrying away the fine particles from the surface, a phenomenon called sheet erosion. As further runoff occurs, the water converges into rivulets and streams, which have greater volume, velocity, and energy, and hence greater capacity to pick up and remove soil. The result is the erosion of gullies, or gully erosion." Wind is able to pick up and carry away soil and humus particles from bare soil. Wind erosion will remove the finer particles from soil, leaving the larger grains and stones. The "remaining soil becomes progressively coarser: sandy, stony, and, finally, rocky. Such coarse soils frequently reflect past or ongoing erosion."
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Answer the following statement(s) true (T) or false (F)
A study's results are deemed worthy of acceptance into the body of scientific knowledge if they are published in journals that ________
A) charge a fee for acceptance B) use the peer-review process C) meet guidelines advocated by environmentalists or consumer groups D) are funded by corporations funding the research
Describe the components of net radiation (NET R)
What will be an ideal response?
Conditions on the early earth surface are thought to include _________ ultra violet light and _________ carbon dioxide than today.
Fill in the blank(s) with the appropriate word(s).