Answer:
Humans affect the environment in positive and negative ways. Cutting down trees and littering have a negative effect on animals and plants. Protecting endangered species and cleaning lakes and seas has a positive effect on the environment.
One is living thins and others are for like other things dna is wat tells the difference between people and stuff and rna don’t idk lol
This is because elements are pure substances with only one atom. When two or more elements are combined, you get compound elements; which allows for more substances to be created.
Answer:
A lot of times it depends on the teacher. Ours didn't count but other teachers did count.
