<span>d. Disk soaked in distilled water
Experimentation is a scientific process wherein you test and verify a hypothesis based on its assumption is going to be supported or negated (null hypothesis). Hence experimentation involves the independent and dependent variable, also control variable as a level in the IV. </span>
<h2>The answer to 9 is <em><u>slippage of a block of material moving along a curved surface</u></em></h2>
Answer:
- inheritable changes
- genetic
- generations
I don't know about the second sentence, is it possible you give me a bit more of a context then maybe i can be of help