Please choose the correct answer to the question: Scientists suggest that, due to human activities, earth has lost waterways and about half of its original forest lands, endangering many animals and plants in their natural living spaces. However, human activity seems to benefit some living things, such as

Answer1: rats and roaches Answer2: saunas and pools Answer3: new phone numbers Answer4: cotton clothing

Answer format: answer1/answer2/answer3/answer4
Answer: answer1