Answer:
1. nitrogen fixing bacteria soil converts excess "nitrates"
Explanation:
usually caused by low h2o, water movement and lack of minerals to filter water and kill bacteria..
2 primary components of septic system are tank and a septic pump to regulate waste and store it in a tank underground. when full, a service has to engage in emptying the tank or it will contaminate water supply...
Selective breeding is something only ascended organisms can adapt to. Us humans use selective breeding. Animals without complex language, artistic capabilities, etc, are unable to adapt to C.
D is your answer.
One risk for accessing carbon from the ground is that it may cause soil contamination. Soil when exposed to large amount of gases and other organically decaying materials can absorb these into their make-up. Fossil fuels are extracted from the ground through drilling processes. When the drilling is unsuccessful, pockets created within the soil can create areas for contamination. When soil is contaminated by fossil fuels, it can no longer be use for agricultural purposes.
Answer:
I think the answer is B i might be mistaken though c:
Explanation:
are in 
we can simply divide 
=
=
=