Given a scientific question, generate a correct answer to it.

[Q]: What type of pressure is the pressure exerted by gas particles in earth's atmosphere as those particles collide with objects?
[A]: atmospheric pressure

[Q]: What is the first direct action of growth hormone?
[A]: stimulation of triglyceride breakdown

[Q]: What separates and strongly unites bodies of adjacent vertebrae?
[A]:
intervertebral disc