7) What is the best explanation for the two statements below? "Some mountains located near the Earth's Equator have snow-covered peaks.

Icecaps exist at the Earth's poles.

A) Both mountain and Polar Regions have arid climates.

B) An increase in snowfall and an increase in temperature have a similar effect on

climate.

C) Mountain and Polar Regions receive more energy from the Sun than other

regions do.

D) D) High elevation and high latitude have a similar effect on climate.

C

Explanation:

Mountain and Polar Regions receive more energy from the Sun than other regions do.

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure