Select all that apply. Language is important to humans because it: .

separates them from the animals
allows them to work with others
allows communication of abstract ideas
allows them to communicate with every person on earth

Why is it important to include a descriptive subject heading? it in sorting the topics. it the recipient see its importance. e-mail programs won’t allow e-mail to be sent without it. it keeps junk e-mail separate from important e-mail.