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Well, I think the answer would be, Both biomass and coal energies are inexpensive, but they release greenhouse gases.</span>
A sound wave is A wave of compression and rarefraction .
Answer;
C.Identify each bird species by using a dichotomous key.
Explanation;
-A dichotomous key is a tool that is used to determine the identity of items in an ecosystem or a particular habitat, such as trees, birds, wildflowers, mammals, reptiles, rocks, and fish. To study the interactions of different birds , identifying each birds species using a dichotomous key would be an important and appropriate step.
Hypotonic - the inside of the cell
Hypertonic - the beaker
