How many protons does an atom of Boron (B) contain? How many neutrons does an atom of Argon (Ar) contain? What is the chemical symbol of the element that contains 13 electrons?

At the beginning of this experiment a bag containing a yellow solution (water + yellow solute) was placed in a beaker containing a blue solution (water + blue solute). The results of the experiment are displayed here. Which color of solute was able to cross the membrane? What is the specific name of the process by which the solute crossed the membrane?

Which objective lens on our microscopes has the smallest field of vision?

What factor is the most likely reason for adolescents requiring more sleep?

The movement of Earth’s crust is termed 

How long ago did dinosaurs go extinct? 

Put the following in order of their evolution. 

The first organisms on land were 

A(n) _____________ is an animal that has a backbone made out of bone or cartilage.

The ____ -finned fish gave rise to tetrapods.