A sound wave is A wave of compression and rarefraction .
The correct option is D.
If water density at freezing point is greater, the ice formed will sink to the bottom of the water body and freeze the water up from the bottom. This will surely lead to the death of everything that live inside the water.
The most obvious pattern is that A binds with T and C with G, as is the case with DNA.
The digestive process, inside the small intestine.
