8
The energy needed to get a reaction started is the activation energy.
Added 7/26/2015 6:18:18 AM
This answer has been confirmed as correct and helpful.
8
The land and water ecosystems that provide the resources that a person uses and that neutralize that person’s wastes is part of that person’s ecological footprint.
Added 7/26/2015 6:19:54 AM
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8
Something that controls the growth or size of a population is a limiting factor.
Added 7/26/2015 6:20:22 AM
This answer has been confirmed as correct and helpful.