Answer:
A
Explanation:
They form in mountains and flow through mountain river valleys. Glaciers cause erosion by plucking and abrasion.
I believe the answer is c. because of Darwin's theory of evolution..
I believe the example of an environmental variation in the above question is, A. Marge dyes her hair blue. Variation represents any difference between cells, individual organisms, or groups of organisms of any species caused by either genetic differences or by the effect of environmental factors. Environmental variation is the ability of an organism to alter its phenotype depending on environmental conditions.
<span>The gland which signals other glands to secrete hormones is the pituitary gland.</span>
Answer:
he many benefits of energy efficiency include: Environmental: Increased efficiency can lower greenhouse gas (GHG) emissions and other pollutants, as well as decrease water use. Economic: Improving energy efficiency can lower individual utility bills, create jobs, and help stabilize electricity prices and volatility.
