Answer: The most abundant gas in the atmosphere is nitrogen.
Explanation:
The Earth’s atmosphere is composed of approximately 78 percent nitrogen, 21 percent oxygen, 1 percent argon and trace amounts of other gases that include carbon dioxide and neon.
Answer:
This question is incomplete and unclear; the complete question including the missing part is:
Emelie is working on a science project. Her task is to answer the question:
"Does Rogooti (a hair cream sold on TV) affect the speed of hair growth
(in length)". Her family is willing to volunteer for the experiment. Identify the control group (CG) and the independent and dependent variables.
ANSWER:
Independent variable: Rogooti hair cream
Dependent variable: Speed of hair growth/length
Control group: Family members that do not use the Rogooti hair cream
Explanation:
In an experiment, the independent variable is the variable that the experimenter changes or manipulates in order to bring about a measurable response. In this case, the ROGOOTI HAIR CREAM is the independent variable.
Dependent variable refers to the variable that is measured or the variable that responds to the change made to the independent variable. In this case, the dependent variable is SPEED AT WHICH HAIR GROWS (IN LENGTH).
Control group in an experiment is the group that does not receive the experimental treatment. In this case, the experimental treatment is the Rogooti hair cream, hence, the control group will be the VOLUNTEER FAMILY MEMBERS THAT DOES NOT RECEIVE THE ROGOOTI HAIR CREAM ON THEIR HAIR.
Vibrate
Explanation:
Through conduction, energy is transferred as particles vibrates into one another.
Conduction is one of the modes of heat transfer. Others are convection and radiation.
- Thermal conduction occurs by the vibrations of molecules of solids.
- When heat is added to body, gain kinetic energy.
- This energy causes the molecules fixed to begin to vibrate around their fixed point.
- When they break free, they start colliding with one another and other molecules with lower energy away from the heat source.
Learn more:
Energy transfer by the sun brainly.com/question/1140127
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B. it determines how difficult it is to start the reaction
Answer:a
Explanation:
i think so cs i read the ariticle