Answer:
C. capillaries connect arteries and veins.
Explanation:
A is false, veins carry blood towards the heart.
B is false because arteries are the thickest blood vessel.
C is completely true
D is false, heartbeat is controlled by electric impulses
What are white blood cells protect against pathogens and aid in blood clotting when injuries are sustained.
Answer:
The trapping of the sun's warmth in a planets lower atmosphere
I’m assuming you mean if the sun dies out. If so, then most things on earth would die within a few days due to lack of photosynthesis and to freezing temperatures (which is what would cause humans to die).
Answer:Igneous rocks are made from cooling of lava or magma.