Why would a change in brain size be important for the evolution of hominids as opposed to other species? (Think beyond a ‘big brain means they are smarter.’ What can you do with your brain that other organisms may not be able to?)

Bigger brain helped our ancestor survives.

Explanation:

Change in brain size is very important for the evolution of hominids as opposed to other species because bigger brain helped our ancestor survives when the environmental conditions changed with the passage of time. They use their brain to avoid negative effects of environment change.  I do a lot of things with my brain that other organisms may not be able to do that such as inventions of new technologies.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.