Answer:
I think humans and whales are closely related on the evolutionary tree because they are both mammals and both have endoskeleton
I think it would be the first ones with lower o2 because fish dont breathe oxygene
The answer regarding the components of an arthropod's nervous system would be item C. It consists of brain, nerve chord, and ganglia. The brain is located dorsally, while the nerve cord together with the ganglia is ventrally structured — extending on each segment of an arthropod’s body.
The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.
<span>the molecule that carries the instruction for producing mRN is DNA</span>
