What are the main things that plant roots must obtain from the soil? Name and describe a process (natural or unnatural) that can keep plants from obtaining the amounts of each of these things they need for survival
What will be an ideal response?
The main things that plant roots must obtain are "optimal amounts of mineral nutrients, water, and air. The pH and salinity of the soil are also critically important."
Erosion: "the process of soil and humus particles being picked up and carried away by water or wind."
Desertification: "the formation and expansion of degraded areas of soil and vegetation cover in arid, semiarid, and seasonally dry areas, caused by climatic variations and human activities."
Overcultivation: leaving the land bare between agricultural crops; continually planting and not leaving fallow; plowing repeatedly resulting in compaction.
Overgrazing: too many animals grazing in too little space.
Deforestation: removal of trees in such a way that soil is exposed and erosion occurs.
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Which Central Asian country did NOT have a U.S. military presence post 9/11?
A) Kazakhstan B) Tajikistan C) Kyrgyzstan D) Afghanistan E) Uzbekista
What type of feature is Hatt Hill? Briefly describe how it was formed. Use a red colored pencil or pen and circle several other of these features on the map.
A sinuously curving, narrow ridge of coarse sand and gravel is called an esker. Eskers form along the channel of a meltwater stream that flows beneath a glacier, in an ice tunnel, or between ice walls beneath the glacier. As a glacier retreats, the steep-sided esker is left behind in a pattern roughly parallel to the path of the glacier. What will be an ideal response?
What is Global Change?
a. Global variation of climate b. Global variation of Earth's landscapes c. Transformations or modifications of physical and biological components in the Earth System through time d. Both a and b
Real tides in ocean basins feel the effect of the ________.
A. continents B. Coriolis effect C. ocean basin's standing wave D. water depth E. All of these are correct.