The correct choice is d, the burning if fossil fuels because fossil fuels do a lot of harm to the world.
Two species have homologous structures. What do these homologous structures show about the evolutionary relationship between the two species? (3 points) The homologous structures show that the two species followed up the evolutionarypath up to the structure. They may have branched off right after that trait.
Answer:
Hypertonic
Explanation:
The cells of the critter are shriveling indicating that there is a high solute concentration in its cells. Hypertonicity causes the cells to shrink because water is leaving the cells to the external solution which one can deduce is also hypertonic.
A. Converging
Explanation
Answer: The steps are made of nitrogenous bases; deoxyribose sugars linked with phosphates.
Explanation: The rungs of the DNA are made of nitogenous bases (The nitrogenous bases are adenine (A), thymine (T), guanine (G) and cytosine (C) ) they are held together by weak hydrogen bonds.
The railings of the DNA are made of deoxyribose sugars which are alternating with phosphates. This part of the molecule is referred to as the "backbone".