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 reason that you can tell that it was chemical is because you can see the bubbles forming. This means that it is giving off a gas.
<span>The statement represented above is TRUE. Our perception is the way how of sensory information understands and interprets the environment we remain in. The perception of a human being provides signals right to the nervous system that is a result of stimulation of our sense organs. The basic structure of our perception is developed by these features : learning, memory, expectation, and attention.</span>
