Please help! I am having trouble on this exam! No links or will be reported and answer in detail so I understand. I am being nice today 100 points! :)

Before the discovery of the microscope, Linnaeus could classify organisms only into two kingdoms. More kingdoms were introduced later. What characteristic of science does this show? (5 points)

a
It is permanent.

b
It is changeable.

c
It is always accurate.

d
It is based on predictions.

Why are carbon dioxide concentrations expected to increase? a carbon dioxide concentrations are expected to increase, because fossil fuel burning is expected to increase b. carbon dioxide concentrations are expected to increase, because of an increase in agriculture. c. carbon dioxide concentrations are expected to increase, because more land will have to be cleared for increasing populations and agricultural use. d. all of the above select the best answer from the choices provided mark this and return save and exit next submit submit