The trunk of a tree carries out functions that are similar to the functions performed by which pair of human body systems?

The skeletal system and the circulatory system

Explanation:

The trunk of the tree helps in transporting the water and food materials to various parts of the plant.

The trunk of the plants provides it support and allows the movement of the substances from the roots to the other parts of the tree.

The skeletal system of the human body provides structural support to human body. The circulatory system of the body helps in transporting materials fro one part  to another in the body.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.