Answer:
a.) freshwater plants may be rooted here--- Shore
b.) littoral zone--- it is the region of a lake or pond that is nearest to the shore
c.) limnetic zone--- A region of open water in lakes and ponds.
d.) alternately dry and submerged--- Intertidal Zone
e.) extends to edge of the continental shelf--- Neretic Zone
f.) generally low nutrient levels
g.) light penetrates here--- Photic Zone
h.) no photosynthesis occurs here--- Aphotic Zone
i.) benthic zone--- this is purely known as the bottom of the lakes or oceans
They observe it, run tests on many different things, and do expirments
(homeostasis) (response to stimuli) (reproduction) growth and development
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a. radioactive isotopes. They use radioactive Phosphorus-32 as labels on a phage (bacteriophage) DNA that infects E. coli. Their experiment showed that the radioactive isotopes were only seen in E.coli and not in the phage.</span>