<span>Industrial waste and sewage.
Hope this helps!
-Payshence xoxo
</span>
Answer:
the concentrations of salt water because its being controlled by the scientists.
Explanation: the iv= between the control and expariment.
dv= data or out come
constant+ not changed at all
Answer:
A rainforest with lots of different animals and plants.
Explanation:
bio<u>DIVERSITY</u>
Diversity: a range of different things.
sunlight and nutrient availability