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A lowering of the dissolved oxygen would be an indication of that happening and that would be the primary thing that i would look for

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Which change in a sample of water could indicate that heterotrophic microbes were active?

a decrease in oxygen level


Which change in a sample pond water could indicate that heterotrophic microbes were active?

a decrease in oxygen level


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yes


Do microbes contribue to Climate change?

yes


What effects do microbes have?

MICROBES CAN CHANGE THE HEALTHY PERSON TO SICK,UNWELL[Aleteration in comfort)or even to kill the person 0


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Passive is to change as active is to affect.


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Eat beans and fart regularily. Honestly , there's a constant exchange of microbes, bacteria, fluides and gasses between the insides and outsides of your body. A couple of microbes will not change a thing if your immune system is not compromised ...


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English grammar active and passive voice change from active to passive he would have kept the present can you change it into passive?

== == "English grammer active and passive voice change from active to passive .


What change in a physical property of matter indicate?

a physical change or a chemical change


Are there any drawbacks to using microbes to clean up pollution?

There is the potential that the microbes used will either become dominant in the environment and alter to consume other food sources, or that they will change enough that we can no longer control them.