Langerhans cells exist on the surface of the skin. They help to protect you by keeping dangerous microbes from entering your body. Langerhans cells do this in two very different ways: by protecting your skin from infection and also by stimulating allergic reactions.
Insomnia and night terrors
Answer: a
Explanation: because i said so
The speed and velocity of a moving body become identical when it tends to move in a straight line.
The absolute simplest way to explain E=MC^2 is: a lot of energy from a little mass.
