2. How long has it taken for the earth's soil yo develop?
a. 10 years
b. 100 years
c. 1 000 years
d. a million years
3. What is the name given to any microscopic plant living in soil, water, or
a. fungi
b. algae
c. bacteria
d. topography​


Sagot :

Answer:

1. B. 100 years

2. B. algae

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