What makes peat a nonrenewable energy resource?
a. it can be replenished within a person’s lifetime.
b. when burned, it contributes to global warming.
c. it takes much longer than a lifetime to form.
d. when burned, it adds pollutants to the air.

Kelly ran electricity though a sample of water using electrolysis. the water changed into two gases, x and y. it was not possible to break down the gases x and y into simpler particles.

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

Explain how scientists use geologic time to determine the age of landforms.