The answer would be nodding.
First class lever refer to a lever on which the resistance exist in one one side of the fulcrum and an effort is made on the other side you can't get a reaction unless something else causes a reaction.
The word “psychology” comes from the ancient Greek roots psyche, which means “mind”, and logos, meaning “knowledge or study.”
Your answer will be Coronary Heart Disease
The failure to deliver blood to the heart due to a narrowing of arteries results in Coronary Heart Disease.
The ideal drug will have a high toxic dose and a low effective dose.
Hope this helps;-;
