Tarkoursecandidine Tarkoursecandidine

13-03-2017
Biology

contestada

What one of the following items is a producer of pollution?
a. forest
b. oceans
c. factories
d. bicycles user: how many times in the history of earth has the number of species dropped drastically?
a. 4 times
b. 3 times
c. 5 times
d. 6 times

Respuesta :

alexia30 alexia30

13-03-2017

1. c , not sure about the 2nd one .

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Calisesalter Calisesalter

16-03-2017

First one C 2nd is A

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