A divide is the elevated boundary between areas that are drained by different rivers system
Answer:
for food, water, shelter, mates, light, and other resources needed for survival and reproduction.
Explanation:
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so sorry if this is wrong
At the end of the winter they are most numerous in fresh water. they will cover surface of aquatic plants or poles and wooden borders of ponds. If you like to study them you can scrape the brown growth with a flat piece of plastic. you can also use a sponge. for the free living (plankton) species fine mesh plankton net is very useful.