Two sounds are described below: Sound 1: This sound is produced by slow vibrations.
Sound 2: This sound has waves where the tops are far apart.

Which statement is true about the sounds? (2 points)

a
Both are high pitch sounds.

b
Both are low pitch sounds.

c
Sound 1 is high pitch and Sound 2 is low pitch.

d
Sound 1 is low pitch and Sound 2 is high pitch.

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.