Sentense of back and forth

What did the study in nicaragua show about the connection between language and numbers, and how does language enable one to understand numbers?

Which factors threaten the forests of north america?

If an atom has no charge, what can we say about the subatomic particles in the atom? a) there will be the same number of protons and neutrons, but a different number of electrons. b) there will be the same number of electrons and neutrons, but a different number of protons. c) there will be the same number of protons and electrons.