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Makovka662 [10]
3 years ago
6

Which two elements make up water?

Biology
2 answers:
Zina [86]3 years ago
6 0
To find out what water is made of, it helps to look at its formula, which is H2O. This basically tells us that the water molecule is composed of two elements: hydrogen and Oxygen or, more precisely, two hydrogen atoms (H2) and one oxygen atom (O). hydrogen and Oxygen are gases at room temperature
umka21 [38]3 years ago
5 0

Answer:

H = Hydrogen

O = Oxygen

Explanation:

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luda_lava [24]

Answer:

16. Control group: Subject A

17. Independent (manipulated) variable: Type of powder

18. Dependent variable: Itching time

19. Explain whether the data supports the advertisement´s claims about its product. Yes, it does.

Explanation:

  • Control group: The control group is used to identify if there are any other factors influencing the results obtained by the treatment in the study (in this case, the new product), from the results that might be a consequence of other factors. The control group must be selected from the same population as the treatment group. Data from an experimental group are compared with the data from a control group. These two groups are identical in all aspects except for the independent variable that the researcher changes in the experimental group to observe how they affect the individuals.  

The experimental group is the one that receives the experimental procedure, with changes in the independent variable.  There can be several experimental groups. In this case, the experimental group is subject B.

  • Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it. It changes to analyze its effects on the dependent variable. Usually, the independent variable is represented by the X letter. In the exposed example, the type of powder is the independent variable.  
  • Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. In the exposed example, inching time is the dependent variable, that depends on the type of powder used.
  • The data <u>does support</u> the advertisement´s claims about its product. The effect of the new product lasts 50% more than the original product. The old powder produced itching for 30 minutes, while the new product produced itching for 45min (15 more minutes, 50% more).
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Being very specific and from a biological standpoint, what makes you different from everyone else?
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4 years ago
Explain how different kinds of chemical reactions interact in metabolism of the human body
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Answer:

Explained below

Explanation:

Human body is made of chemicals. There are thousands of metabolic reactions occurring simultaneously inside our body. The sum total of all the chemical reactions in our body is called metabolism that involves catabolism and anabolism. A catabolic reaction is state that the breakdown of food to obtain energy and anabolic reaction uses this energy to synthesize larger molecule from smaller molecule. These reactions are critical for maintaining life.

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