The ecological efficiency of herbivores and carnivores is ...

[mynx]

The ecological efficiency of herbivores and carnivores is estimated by most authorities to be roughly:
 a. 1 percent.
  b. 10 percent.
  c. 30 percent.
  d. 90 percent.

Question 2

Explain how natural regions can change in size or shape over time in response to environmental changes.

[tuate]

Answer to Question 1

B

Answer to Question 2

Humans can modify the aspects of regions by, for example, shifting species abundance or altering habitats. A changing climate can also alter the spatial pattern of key conditions, so that shifts in ecosystem boundaries occur.

[mynx]

Gracias!

[carojassy25]

Thanks for the timely response, appreciate it