<span>Similarly to cells, viruses can spread and grow, as well as mutate. They can change what they do becoming even more deadly or they can become immune to medicine. They can also spread from cell to cell, then from people to people, change the way they spread as they mutate, and many many other things that are usually bad for humans.</span>
Answer: The 2nd and 4th options are correct. Good luck :)
Explanation:
With a certain species out of the food chain this leaves other animals population to dwindle because of them feeding off of the migrating animals. Meanwhile other plants and animals might flourish because these animals would no longer be a threat to their species.
Current estimations are that one in five Americans will develop skin cancer in their lifetime. It is estimated that approximately 9,500 people in the U.S. are diagnosed with skin cancer every day. Which adds up to over 3.3 million persons each year.
Hope this helps! :)
I think that is might be 25%. I hope that helps.