The correct answer for this question is C - the best description of a
chemical reaction from the answers offered here is that it consists of
the forming and breaking of bonds between particles. There are not any
atoms destroyed in a chemical reaction, so B and C are incorrect, and
although mixing two substances together (as specified in A) could
produce a chemical reaction, this is not the best way of describing the
actual chemical process.
The answer is b) they focus light
During hibernation, animals enter dormancy during winter months. Their body temperature drops, heart rate slows, and metabolism slows. Estivation occurs during hot or dry periods.
Its tissue is pretty soft