81) Unless the population growth stabilizes, environmentalists predict a worldwide starvation by the year 2000 A.D.
(A) famine
(B) flood
(C) rebellion
(D) disease
82) Flamingos were about to have died out until laws were passed to protect them.
(A) become confined
(B) become extinct
(C) become infected
(D) become deformed
83) The number of insect species is greater than that of all other animal species.
(A) exceeds
(B) equals
(C) augments
(D) predicts
84) Honeybees live in a complicated society of ten to fifty thousand members.
(A) concealed
(B) complex
(C) extension
(D) eradication
85) All drinks that include saccharin must be marked with a warning label because saccharin may cause cancer.
(A) packages
(B) beverages
(C) medications
(D) desserts
86) Magma is the primary source of all the earth's rocks.
(A) cheapest
(B) first
(C) nearest
(D) worst
87) Sharks must swim all the time to avoid sinking.
(A) swiftly
(B) rarely
(C) precisely
(D) constantly
88) Microprocessors, unlike computers, are programmed to complete defined tasks.
(A) specific
(B) arduous
(C) several
(D) similar
89) The galaxy slowly circles around a spherical center.
(A) expands
(B) rotates
(C) accelerates
(D) vibrates
90) Carbohydrates are plentiful in nature where they serve as an immediate source of energy.
(A) abundant
(B) unstable
(C) obscure
(D) reliable