Plate tectonics: what is the approximate difference in elevation from point C to D? A) 400
B) 200
C) 1500
D) 1100

Compare and contrast physical changes with chemical changes.

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum