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which of the following came first in the scientific study of living organisms?
a. light microscope
b. cell theory
c. electron microscope
d. model of dna

What are two ways in which waves erode the land?

Long term exposure to waves can cause sunburns and skin cancer.

Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.