Explanation:
Species of rats are found throughout the order Rodentia, but stereotypical rats are found in the genus Rattus. Other rat genera include Neotoma (pack rats), Bandicota (bandicoot rats) and Dipodomys (kangaroo rats). Rats are typically distinguished from mice by their size.
The vacuole is a "container" in the cytoplasm in a cell that stores water, food, and waste.
<span>When two different species are competing for a resource in a contained situation, the result is the extinction of the one species or the other.</span>
Its B because every cell has a nucleus and red blood cells are actually rich with hemoglobin and they release the carbon dioxide picked up from body tissues and become saturated with oxygen. (im sorry if this is wrong but im 89% sure im right)
