The main difference between ponds and lakes is that ponds
a. are inland bodies of water
b. do not develop self-contained ecosystems
c. are smaller than lakes
d. have easily observed currents

This organism is not capable of performing photosynthesis. (horseshoe crab) true false

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes