Which statements explain why theories change over time? Check all that apply.

Which statement about the cosmic microwave background isnottrue? A) It is the result of a mixture of radiation from many independent sources, such as stars andgalaxies.

How long do scientists estimate that the sea has been at its current level?

Which is not associated with upwelling? a. increased plankton population. b. horizontal water movements. c. increased nutrients at the ocean surface. d. vertical water movements.

The elderly population in the US is expected to increase substantially over the next twenty years. Which of the following best explains this population increase?

In which southern African country do most of the people practice traditional religions?

A camera weighs 2 1/5 pound on earth. object weigh 3/8 as much an Mars as on earth.

The governments of libya, syria, iraq, and iran have all been accused of

Why is the savannah a fragile enviroment?

Most streams carry the largest part of their load

Orthodox Christians believe that there way is the only right way so other followers of Christianity are