A function of a plant's roots is to
A: absorb water and minerals.

Nerve cells transmitting messages to the body best demonstrate which primary function?
A: the transfer of energy

A large tree was cut down with a saw. What is the best way to estimate the age of this tree?
A: count the number of rings in the trunk

Eye color is a physical trait. Which statement best explains why a child has a specific eye color?
A:
Eye color is an inherited trait.