Answer:
B. Cartilaginous fish
Explanation:
Sharks have a cartilaginous skeleton. Cartilage is less dense than bone which allows sharks to move quickly through the water without using too much energy.
The skin of a cell
molecule flow from high to low
glucose facilitation
ion channels
Answer:
Niche
Explanation:
Niche basically is the lifelihood of a species that involves feeding on what, drinking from what....
If both species are competing for the same resources, they would compete until a certain species is eradicated. (think of it as 2 species of ants in 2 colonies that are close to each other, take the same leaves, prey and stuff. They would fight with each other in other until one colony is eradicated.) hence, unless a species and adapt and change its niche, both species would fight until one is eliminated. Thus, the principle states that 2 species cannot continue to occupy the same niche, not living environment.
I think the correct answer from the choices listed above is option A. One way in which bacteria differs from humans is that bac<span>teria are single-celled while humans contains a lot of cells. Bacteria can be found microscopically while humans are not. Hope this answers the question.</span>
The amount of time that the 2 species have been evolving apart??
