south
east
west
damage caused by animals and plants
c.
natural acids
b.
ice wedging
d.
physical factors
B) compression
C) pitch
D) amplitude
Sound waves have two parts. The part of the wave where the particles of the medium are pushed together is called the _____.
compression
Use of mitochondria to obtain energy.
Presence of a cell wall to maintain osmotic pressure.
Presence of DNA to store heredity information.