A class wants to use marbles in a clear shoebox with a lid to model the particles in a solid, a liquid, and a gas.

Describe how you would model the motion of the particles in each state.
Enter your answer in the space provided.

Astudent drew the following flowchart to show the movement of nutrients. soil → roots → plants →? where does nitrogen go next? a. directly into nearby animals as nutrition b. directly into aquifers through condensation c. directly into the air through evaporation d. directly into nearby plants during fixation

What is a dendrite and what does it do?

How do the sperm cells get from the stigma to the ovules?