Multiple Choice
Native Americans planted crops of corn, squash, and beans. The beans increased the level of nitrogen in the soil. The corn required high levels of nitrogen and provided a support for the beans to climb and receive more sunlight. The large leaves on the squash shaded the ground and limited weed growth. This agricultural method
A) created wildlife corridors.
B) increased the number of pests in the fields.
C) caused mass extinctions.
D) reduced the ecosystem services.
E) is a type of sustainable agriculture.
Correct Answer:

Verified
Correct Answer:
Verified
Q2: Which of the following does NOT represent
Q3: Wildlife corridors are designed to keep predators
Q4: Sustainable agriculture depends on planting large tracts
Q5: A(n) _is an animal whose predation on
Q6: Pollutants such as_ may affect the reproduction
Q8: How can you, as an individual consumer,
Q9: Maintaining soil fertility, purifying water, producing oxygen,
Q10: As a result of global warming,<br>A) there
Q11: Some biologists believe that life on Earth
Q12: The principle of _requires that the human