Brainliesttt which statement is true about sodium chloride (nacl)? it is a salt because it decreases the concentration of metallic ions. it is an acid because it is formed by the reaction of a salt and an acid. it is a salt because it is formed by the reaction of an acid and a base. it is an acid because it increases the concentration of nonmetallic ions.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.