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The cycle that describes the replenishing of ground and surface water is called:

Alexander von Humboldt was the first to notice that:

You are growing Carolina Reaper peppers in a 2 ft diameter pot that has a surface area of 3.1 square feet, and believe it is time to fertilize. The instructions suggest that you apply 3 lbs of N per 1000 ft2 of garden. To apply this N rate how much fertilizer do you need to apply to the pot? Your fertilizer choice is MiracleGro 20-20-20. To the extent that you can show your work or explain your method of solving this problem for partial credit.

A rock breaking apart do to freezing and thawing is an example of:

In many places where crops originated a diet emerged that consisted of a legume for protein and a ____________ for energy.

The ratio of the plant product you want (grain for example) compared to the total plant mass is called the?

In an ecosystem with a complete vegetation cover (canopy), competition among plants will most likely be for:

Cultivation is:

Which of the following is not a soil forming factor?

Nearly all the land that can be easily cultivated is being used for?