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!
Answer:
Air pollution will increase due to increased use of fossil fuels and the amount of natural space will decrease as suburban areas increase.
A: the energy released because the chain is tracking the energy transferred from the prey to the predator
<span>Sixty percent of daily energy for the human body is determined by basal metabolism rate, or BMR. Basal metabolism rate is the minimum energy needed for a body to function (i.e. how many calories you would burn resting for an entire day and night).</span>
Answer:An element is made up of entirely atoms while an atom is made up of at least three particles.
Explanation:
An atom is made up of protons and neutrons which stay in the nucleus and an element is composed of entirely atoms because of the atoms charge.
