1) Which of the following are scales of ecosystems?
a. Micro
b. Macro
C. Messo
d. Ecotone

When organisms convert from of energy, what usually results

The response is the basis for vaccination. primary secondary tertiary none of the above

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land