~Hello there!
Your question: What substance is considered a building block for all living things?
Your answer: Carbon is the substance that is considered s building block for all living things.
Any questions ^?
Happy Studying!
Answer:
B
Explanation:
Erosion displaces sediment.
I think they are good and bad
Caleb’s immune system will have the experience of getting rid of this antigen and know exactly what to do to overcome it efficiently.
Answer:
The only haploid cells in humans (with 23 chromosomes and no matching pairs) are:
A. sperm and egg cells