Examlex
Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices provided. (1) A pentaatomic tetrahedral molecule may be polar or nonpolar depending on the identities of the atoms present.
(2) A bond between atoms that differ in electronegativity by 2.1 units is classified as a polar covalent bond.
(3) The sum of the number of valence electrons a nonmetallic atom has and the number of covalent bonds it "normally" forms is eight.
Nutrients
Substances that provide nourishment essential for the growth and maintenance of life.
Intertidal Zone
The coastal area that is exposed to air at low tide and submerged at high tide, hosting a diverse array of adapted organisms.
Land Area
The total surface area of the Earth that is covered by land, excluding oceans and other bodies of water.
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