Old growth forests can be described by all of the following EXCEPT
A: have not been disturbed for several hundred years.
B: large numbers of snags and fallen logs.
C: provide a variety of ecological niches.
D: a clear forest floor.
E: are the prodominant forest form in the tropics.
A: have not been disturbed for several hundred years.
B: large numbers of snags and fallen logs.
C: provide a variety of ecological niches.
D: a clear forest floor.
E: are the prodominant forest form in the tropics.
举一反三
- If you have a forest that remains undisturbed, and another forest that has been logged. Which forest will show exponential growth?
- Toward the end of the afternoon, we followed what seemed to be a large movement of chimpanzees into one great open room in the forest, relatively clear except for columns of nut trees.
- ---Mary, I remember you ______several years ago.---Yes, I______ for 3 years. A: married, have married B: married, married C: married, have been married D: have married, have been married
- Canada is well known for all the following EXCEPT A: its mineral resources． B: its forest resources． C: its fertile and arable land． D: its heavy industries．
- Which statement best expresses the main idea of the article A: Many different kinds of medicine come from tropical forests B: Virtually all of the world's rain forest has already been destroyed C: Tropical forests are disappearing at an alarming rate D: Tropical deforestation affects people in all parts of the globe