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?

Yes, there is change in the color of the indicator.

Explanation:

Cabbage indiccator is a purple/blue solution that will change color with the change in pH.

A more acid substance will turn the indicator red and a more basic substance will turn the indicator green.

The bubbles are made of CO₂, which will react with the water in the indicator solution to form carbonic acid. Since the solution will turn more acidic, the indicator will change from a purple color to a red color.

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them