Root hairs

Americans historically have been interested in two aspects of plant use

Early American farmers faced a surplus problem because

The term used to describe united sepals is

Plants that drop their leaves and appear dead but are actually alive are:

Which of the following best describes a motor unit?

A plant stores food in the form of starch, has cell walls, and contains chlorophyll a and b. 

Which of the following is NOT a property of muscle tissue?

All plants have an optimum and minimum temperature for best plant growth.

Early American farmers faced a surplus problem because