A scientist finds a fossil that she thinks might make a good index fossil. Which characteristics does this fossil most likely have? Select two options. It is the remains of an organism still found alive today. It is the remains of an organism that was alive for only a short time. It is the remains of an organism that is found in abundance nearby. It is the only fossil for this type of organism that has ever been found. It is the remains of an organism that lived in a narrow geographic area.

Option D, It is the remains of an organism that lived in a narrow geographic area

Explanation:

Animals or plants that live in a specific time span of earth and are preserved beneath the earth as fossils are known as index fossils. Generally, the time span of their burial is quite small or narrow. Such fossils has following characteristics

a)Distinctive

b)Easy recognizable

c)Abundant

d)Wide range of geographic distribution

e)Short range of time distribution.  

Because of their distinctiveness, these fossils form the basis of defining boundaries in the geologic time scale and correlation of strata.

Hence, option D is correct

the second option is correct.

"It is the remains of an organism that is found in abundance nearby."

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

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.