That xylem is the substances that feed the plant, the substances that go from the dirt to the plant's body; and the phloem is the substance that goes from the pant to the ground, it's like the excretion of the plant. It's like the xylem goes up and the phloem goes down. The xylem usually is composed by Na, K and other substances that need the plant to live.
Answer:
As DNA replication continues and the replication bubble expands, the parental double helix is unwound and separated into its two component strands. This unwinding and separating of the DNA require three different types of proteins: helicase, topoisomerase, and single-strand binding proteins.
Explanation:
3 More Days Till Christmas
<span>an organism’s living and nonliving interactions with its environment </span>
To keep people at bay and to make sure the rules and laws are followed
