Sirius, the brightest star, is 8.8 light-years from earth. that means
a) sirius is not part of the milky way.
b) sirius is closer to earth than the sun.
c) we see sirius as it looked 8.8 years ago.
d) it would take us 8.8 years to reach sirius.

What does x represent in the formula for the compound xcl4?

There are main groups in the modern periodic table of elements

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)