Which of the following is an example of a physical change? A) pouring hydrogen peroxide (H202) on a cut, causing oxygen (02) bubbles to form
B) mixing together flour, sugar, salt, eggs and butter to make cookies
c) baking a birthday for your best friend
D) enzymes within the digestive system breaking down the lunch you just ate

B! i just learned this last week lol!

Explanation:

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the atomic mass is the bottom number on the element.

-steel jelly

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