A physical change means that none of the atoms or chemical bonds have been changed inside of something. Therefore, if you make a physical change, you should be able to revert it back. That means that the answer to this question is "The changed substance retains its unique properties." because it is the only answer choice where nothing major is being changed. The rest of the answer choices indicate that once changed, it isn't able to be changed back.
Cancer has been apart of history for a long time
Renewable resources are easily obtained and can be created quickly. Things like fossil fuels take millions of years to create. C is the answer because as k stated fossil fuels are nonrenewable and take millions of years to create, Soybeans are easily made so it's renewable.
Hope I helped. :)
Answer:
Explanation:
Abstract. The use of antibiotics in food animals selects for bacteria resistant to antibiotics used in humans, and these might spread via the food to humans and cause human infection, hence the banning of growth-promoters.
<span>Chemosynthesis is the answer</span>
