B. Segregation.
I have the same question and answered it and this is what it told me. I think it should be right.
I think the correct answer from the choices listed above is option B. During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will <span>stop moving across the membrane. This is because equilibrium has already been achieved and there is no more driving force which is the concentration gradient present.</span>
Answer:
B: The shorter and more rounded the Appalachian Mountains are more than four times older than the taller and more jagged Rocky Mountains
Explanation:
- The Appalachian mountains form a system of mountains in eastern North America and are older than rocky mountains as they were formed 480 million years ago and are similar to those of the alps. They form a barrier to the east to the west.
- They extend to southeast Canada and form zones of 300 miles wide. They form the mountain ranges surrounding hills and the dissected plateaus forming at an elevation of 6,684 meters from the sea level. <u>Whereas the rocky mountains are younger and have an elevation of 4,401 meters.</u>
The answer is <span>Both lack membrane-bound organelles and are single-celled.
Prokaryotes are unicellular organisms. The main difference between them and eukaryotes is the absence of nucleus and organelles in prokaryotes and their presence in eukaryotes. That is why they belong to different kingdoms. On the other hands, Archaea and Eubacteria differ in the composition of their cell wall. </span><span>Archaea's cell walls are made of uncommon lipids while Eubacteria have cell walls made of peptidoglycan.</span>
