Which of these does organic farming use? A.
effective pesticides
B.
genetically modified seeds
C.
hormones
D.
fertilizers
E.
green manure

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

a compound light microscope is used to magnify objects in steps.  

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