Light travels in lines.
Fill in the blank

Light travels in straight lines.

Explanation:

Once light has been produced, it will keep travelling in a straight line until it hits something else.

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation: