Answer:
Below
Explanation:
They are important because they can help up get warmer/colder when our bodies can't
The correct answer is A
The scientist can determine that this nucleic acid is a DNA molecule, because it contains Thymine, which does not occure in the RNA molecule. The RNA molecule contains Adenine, Guanine and Cytosine just like the DNA, but unlike the DNA it contains Uracil, not Thymine.
Secondly, the scientist can say with certainty that this DNA molecule is surrounded by a nucleus based on the structure of the nucleic acid described. Only eukaryotic cells have ladder structure. The prokaryotic cells have circular DNA and do not have any organelles, like the nucleus. Therefore, from the ladder structure of the DNA the scientist can see that the cell has a nucleus.
D. All of the above would be the correct answer because for A. some plants or trees need the rain and without the rain that normally flows in the ecosystem will result in dead plants and trees and the animals that consume these plants will decrease as well. For B. developing this mall will result in many trees and homes of the wildlife to be destroyed. And for C. this would make a sudden change to the animals population because the owls are decreasing.
