Earth's atmosphere is 78%<span> nitrogen </span>21%<span> oxygen, </span>0.9%<span> argon, and </span>0.03%<span> carbon dioxide with very small percentages of other elements.
hope it helps</span>
In ecology, the law of conservation of mass is applied by the principle of taking energy from the lower trophic levels and passing it to the higher trophic level by any means.
<h3>What is the law of conservation of mass?</h3>
The law of conservation of mass states that the actual mass in an ecosystem is neither created nor destroyed. Overall remains constant in a system.
In ecology, it illustrates that when an organism is ingested by other organisms, its mass is conserved. Some of the organisms may also be dependent on the waste products like urine and feces to make proteins and other compounds.
Therefore, the energy or mass is neither lost in any form. It simply is taken by other organisms through any means.
To learn more about Ecological principles, refer to the link:
brainly.com/question/7413811
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1) Mice not radio waved.
2) Radio
3) Strength of mice
4) Maybe inconclusive.
5) Improves strength
Explanation:
- Control Group - Mice not radio waved.
- Independent Variable - radio.
- Dependent Variable - Strength of mice.
- What should Bart's conclusion be? Maybe inconclusive.
- How could Bart's experiment be improved? Improves strength
Experimental setup
setup that is testing a hypothesis using a variable. In most cases only one variable should be tested at a time.
Control Setup
setup that is identical to the experimental setup, only it does not contain a variable.
Independent Variable
The one factor that is change by the person doing the experiment
Dependent Variable
The factor which is measured in the experiment
Constant
all the factor that stay the same in an experiment.
