Author Question: The flow of nutrients through a biotic community is ________. A) cyclic and multidirectional B) ... (Read 39 times)

tingc95

  • Hero Member
  • *****
  • Posts: 556
The flow of nutrients through a biotic community is ________.
 
  A) cyclic and multidirectional
  B) cyclic and unidirectional
  C) noncyclic and multidirectional
  D) noncyclic and unidirectional

Question 2

How do centripetal forces and gravitation forces interact to produce the tides?
 
  What will be an ideal response?



elyse44

  • Sr. Member
  • ****
  • Posts: 319
Answer to Question 1

A

Answer to Question 2

The tide-generating forces create two simultaneous bulges: one on the side of Earth directed toward the Moon (the zenith) and the other on the side directed away from the Moon (the nadir). On the side directly facing the Moon, the bulge is created because the provided gravitational force is greater than the required centripetal force. On the side facing away from the Moon, the bulge is created because the required centripetal force is greater than the provided gravitational force. Although the forces are oriented in opposite directions on the two sides of Earth, the resultant forces are equal in magnitude, so the bulges are equal.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

For a complete list of videos, visit our video library