A. Basically a hotspot forms above a mantle plume. A mantle plume is like a bit of magma from the earths mantle, but it’s like not near tectonic plate boundary things. (Sorry if that doesn’t make sense lol if you’re still confused I’d just look up a diagram of a hotspot)
B. A stratovolcano, those are just volcanos that are built with a bunch of lava and ash
C. Mt. Helens is formed on a subduction plate boundary, while a hotspot is formed because of mantle plumes, which are usually not on a plate boundary.
Hope this helps lol
Answer:
The correct answer would be D.Alveolar sacs are surrounded by thin capillaries where gases can be exchanged.
Alveoli are tiny sacs which form the site of gas exchange in the lungs.
The features of alveoli which help in gas exchange are:
- They increase the surface area in the lungs thus, more space is available for gas exchange.
- They have very thin walls, as thin as the thickness of a single cell only.
- They are surrounded by a bunch of thin capillaries which exchange gases with alveoli.
The answer is C, the galaxies are moving farther away.
Answer:
A. active transport
Explanation:
active transport is the movement of a substance across a membrane against its concentration gradient.
hope it helps you
