Primary and Secondary Succession are similar in all of the following ways except... Oa
Ob
Both begin by creating soil from bare rock.
Both involve pioneer species colonizing an area.
Both end in a climax community.
Both can take a long time to finish.
d

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

your answer is true

i am 100% sure

explanation:

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

well, i believe that the answer is 2. : 3