Hey There!
Here is your answer:
Your answer is that a experiments should be controlled because the experiment could go out of control which could harm or hurt someone.
Also the definition of a controlled experiment is a part of the experiment that's not touched.
Ex: Water is your controlled experiment that's because our not doing anything to the water.
If you need anymore help just ask me!
Hope this helps!
blood type B could have a genotype of either BB or BO.
The nuclear family is the most common family structure in all cultures around the world as. Yes , nuclear family or <span>elementary </span>family<span> is a </span>family<span> group consisting of a pair of adults and their children.</span>
The Economy<span> and Environment. </span>Estuaries<span> are </span>important<span> natural places. They
providegoodsandservicesthat are </span>economically<span> and </span>ecologically<span> indispensable.
sry if wrong</span>
<span>They capture energy from sunlight and manufacture their own food</span>
