The crust<span> and upper </span>mantle<span> of the Earth </span>form<span> the lithosphere.</span>
Answer: Some stunts and activities can be dangerous to be performed and must be done with utmost precautions.
Explanation:
The activities such as sky diving, stunt performing and race car driving can be risky for mental and physical health. These activities can cause mental or physical trauma can even lead to death but some people still engage in such activities because they want to do some daring and they want to overcome their fear and want to set up a benchmark in the society. Such activities are potentially responsible for boosting courage, confidence, and strength to overcome fear.
Alkaloids.
Any of a class of nitrogenous organic compounds of plant origin that have pronounced physiological actions on humans. They include many drugs (morphine, quinine) and poisons (atropine, strychnine).<span />
Colloid is the mixture of red blood cells that is floting with plasma. This is in the body.