Bases Do Not

question 18

Multiple Choice

Bases do not

• A) taste bitter.
• B) turn red litmus to blue.
• C) liberate H₂ when mixed with an active metal.
• D) produce OH^- ions in water solution.

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Definitions:

Competitive Exclusion

A principle stating that two species competing for the same resources cannot coexist permanently if their ecological niches are identical.

Character Displacement

A phenomenon where differences among similar species whose distributions overlap geographically are accentuated in regions where the species co-occur but are minimized or lost where the species' distributions do not overlap.

Keystone Species

A species that has a disproportionately large effect on its ecosystem, influencing the types and numbers of other species in a community.

Sea Stars

Sea stars, also known as starfish, are marine invertebrates belonging to the class Asteroidea, known for their radial symmetry and a body plan consisting of a central disc from which arms (or rays) extend.