Answer:
c) mutation and natural selection both cause changes in a population
Explanation:
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Answer:
Matter
Pure substances Mixture
Element compound Homogenous Heterogenous
Answer:
because the force of water coming out of the hose needs a stardy flow
Explanation:
Answer: Fourth option. It increased by a factor of 3.
Solution:
m1=1.0 kg
Cylinder's gravitational potential energy: Ep=m*g*h
Ep1=(1.0 kg)*g*h
Ep1=g*h
m2=3.0 kg
Ep2=(3.0 kg)*g*h
Ep2=3*g*h
Replacing g*h by Ep1 in the equation above:
Ep2=3*Ep1
Then, the cylinder's gravitational potential energy increased by a factor of 3.
