Another car travels northwest for 2 hours and covers a distance of 90 miles. What is the average velocity of the car?

Which terms are used to identify pure substances

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?