In addition to designation of horizons, soil scientists also designate subhorizons, for instance, indicating human activity or presence of organic matter
Indicate whether the statement is true or false
TRUE
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Five layers of rock are cut by two faults. Both faults cut through all five layers of rock. Fault A breaks through to the surface, whereas fault B does not. Which of the following statements about faults A and B is most accurate?
a. Faults A and B are about the same age, and both are younger than the five layers of rock. b. Fault A is younger than fault B, and both are younger than the five layers of rock. c. Faults A and B are about the same age, and both are older than the five layers of rock. d. Fault A is younger than fault B, and both are older than the five layers of rock.
An increase in total forest mass should lead to a decrease in either the amount of carbon dioxide in the atmosphere and/or the rate at which the concentration of carbon dioxide in the atmosphere is growing
Indicate whether the statement is true or false.
What selective advantages did an exoskeleton or shell provide?
Farmers who regularly experience pests that cause catastrophic damage once infestation occurs, may benefit from insurance spraying, in which
A) the insurance company pays for the spraying and in turn does not pay for damaged crops. B) just a small percentage of pesticide is released to warn the pests that more is to come. C) the crops are sprayed with a pesticide before there is evidence of crop damage. D) a chemical treatment for one pest is applied, but no broad-spectrum pesticides are used.