Can someone help me with this, please?

What are the eight major mineral groups?

Which plains area lies in both the united states and canada? altiplano central canadian shield coastal plains great plains

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

After a group of researchers conducts a new experiment that has never been conducted before, what is the best way for other scientists to make sure that the data is real