Which action might lead scientists to develop new explanations about the
universe?

A. Becoming familiar with the history of space exploration

O B. Speculating on whether conditions on other planets might support
life

O C. Developing new technologies designed to see farther into space
than before

D. Wondering about the present size and shape of the universe and
how it formed

0.3x0.21x0.08kg=mass 1 sheet

mass 500 = 500xmass 1

volume pile = 0.3x0.2x0.048

density=mass/volume= 500xmass 1/0.3x0.2x0.048

v patient student

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide