Goods or services that are required.
When referring to knowing where to find something when you need it you mean that you do not need a memorization of all things, you just need a source to find it when in need. I hope this answer suited your needs.
Answer:
c. By infecting living cells
Explanation:
c. By infecting living cells
Answer:
D. glucose.
Explanation:
I don't have any info on it so, hope this helps.
