2. What is the function of myelin in nerve cells? connects nerve cells to each other
insulates nerve cells, greatly increasing the speed at which impulses travel
insulates the brain, protecting it from damage
insulates nerve cells, greatly decreasing the speed at which impulses travel

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.

What was the purpose of the apollo program? to put a man in orbit to launch a spy satellite to launch a space station to put man on the moon

The ideal gas model is valid if which of the following conditions is true? the gas density is low. the gas density is high. the temperature is low. the temperature is high. the gas density and the temperature are low. the gas density and the temperature are high. the gas density is high and the temperature is low. the gas density is low and the temperature is high.