The roots of the trees keeps the soil in place
F is the correct answer I think
Across
1 sensory
8 neurotransmitters
10 medulla
16 neuron
29 cerebellum
21 trauma
sorry i only did some of these The Nervous System ones cause i only know about them alot even more than my class knows
Digestive System. Its what makes you bm. And your bm is waste