Which of the following describes an old-growth forest? a. a forest that has been planted with pine trees to be harvested for paper production b. a bristlecone pine forest that contains trees that are over 500 years old c. a forest that is regrowing after a forest fire d. a forest that is regrowing after it was clear-cut by a logging company

B. A Bristlecone pine forest that contains trees that are over 500 years old

Explanation:

An old growth forest is forest that has been left to grow undisturbed for a very long time such that it has attained a relatively stable climax community. Old growth forests are sometimes referred to as primary, virgin or late seral forests.

Option C and D are incorrect. Both clearly negate the definition of an old growth forest. Option A cannot be correct because it indicates a short term growth.

The correct option is B. 500 years a long time that is enough for an undisturbed forest to reach a climax stage.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

blue

light-years

magnitude