Fresh-water ecosystems consist of ponds, streams, rivers, lakes, wetlands, and aquifers. Which of the following BEST describes these ecosystems? Give the CORRECT answer.
A: low salt content, no photosynthesis
B: low salt content, surrounded by land
C: high salt content, high photosynthesis
D: high salt content, surrounded by land
1 answer
B: low salt content, surrounded by land