Answer:
because they have thicker walls
Explanation:
blood is punped our of the heart very fast which means it would need a blood vessel witch thick walls to withstand the pressure. thin walls would cause the blood vessle damage and may evwn break as it wouldn't be able to withstans the pressure.
Answer: I think it is uplifting movement theory
Explanation:
I am learning about this stuff in my class.
Answer:
Comparing DNA
Explanation:
Darwin could compare only the anatomy and embryos of living things. Today, scientists can compare their DNA. Similar DNA sequences are the strongest evidence for evolution from a common ancestor.
Answer: The plant becomes self-sufficient when leaves grow onto it.
Explanation: The leaves will start photosynthesis instead of the Cotyledons providing nourishment for the seed.
A substrate is a reactant that is catalyzed by an enzyme.
