Biology, 24.03.2020 21:05 jholland03
A construction worker uses a hammer to drive a sharp nail into a concrete wall. What two simple machines is the construction worker using when he does this task?
A.
a lever and a pulley
B.
a screw and a wheel and axle
C.
an inclined plane and a pulley
D.
a wedge and a lever
Answers: 3
Biology, 22.06.2019 14:30
Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals
Answers: 3
A construction worker uses a hammer to drive a sharp nail into a concrete wall. What two simple mach...
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