____________________ is an important constituent of soil and ...

[WhattoUnderstand]

___________________ _ is an important constituent of soil and provides nutrients to plants and increases the ability of the soil to retain ___________________ _.
 Fill in the blank(s) with correct word

Question 2

Corals became dominant reef-builders in the ____.
 A)Cambrian
 B)Ordovician
 C)Silurian
 D)Carboniferous
 E)Permian

[essyface1]

Answer to Question 1

Humus, moisture

Answer to Question 2

C

[WhattoUnderstand]

Excellent

[at]

Thanks for the timely response, appreciate it