The correct option is (d)They are each made of matter. Some are compounds made of one type of element. Some are pure atoms.
Any substance with mass and volume is considered matter because it occupies space. Water is a substance that is created when Hydrogen and Oxygen are combined in a fixed ratio (2 H: O) with a chemical link. The elemental metal silver can be found in nature in its metallic form. Carbon is an element, and carbon dioxide as a compound is created when elements of carbon and oxygen are joined in a specific ratio to form the gas.
They are each made of matter. Some are compounds made of one type of element. Some are pure atoms.
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Perhaps the bird’s calls could be less attracting and disorienting to predators and the ones with the said distinctive calls could have survived to repopulate and pass down the genes.
Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom. The term isotope is formed from the Greek roots isos and topos, meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table.
Answer:
D. Power is required in order for work to be applied on an object
Acidity is determined using a pH indicator
