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Organisms are made of elements that form living matter. Which elements comprise the largest portion of living matter?
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
Hydrogen, carbon, oxygen, and nitrogen
Copper-Cu
Cr and Cs
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
calcium
Co
Ag, Db, and Xe
The chemical symbol Ca represents....
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
Hydrogen, carbon, oxygen, and nitrogen
Copper-Cu
Cr and Cs
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
calcium
Co
Ag, Db, and Xe
Which of the following correctly represents an element?
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
Hydrogen, carbon, oxygen, and nitrogen
Copper-Cu
Cr and Cs
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
calcium
Co
Ag, Db, and Xe
Which of the following represents an element?
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
Hydrogen, carbon, oxygen, and nitrogen
Copper-Cu
Cr and Cs
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
calcium
Co
Ag, Db, and Xe
Which group of elements comprises the largest portion of oceans?
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
Hydrogen, carbon, oxygen, and nitrogen
Copper-Cu
Cr and Cs
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
calcium
Co
Ag, Db, and Xe
Which of the following represents an element?
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
Hydrogen, carbon, oxygen, and nitrogen
Copper-Cu
Cr and Cs
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
calcium
Co
Ag, Db, and Xe
Which elements comprise the largest portion of the atmosphere?
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
Hydrogen, carbon, oxygen, and nitrogen
Copper-Cu
Cr and Cs
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
calcium
Co
Ag, Db, and Xe
Which of the following substances is an element?
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
Hydrogen, carbon, oxygen, and nitrogen
Copper-Cu
Cr and Cs
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
calcium
Co
Ag, Db, and Xe
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