An asteroid that impacted Earth about 66 million years ago is believed to be responsible for ____
a. the creation of life on Earth
b. a global catastrophe that may have wiped out the dinosaurs
c. the splitting of one land mass into continents
d. a mass extinction of land plants
e. the evolution of Earth’s oceans
ANSWER: b
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The life-threatening condition that may develop during a type I hypersensitivity reaction is called
A) anaphylaxis. B) septic shock. C) stroke. D) toxic shock.
Horseshoe crabs belong to:
A. the subphylum Uniramia. B. the subphylum Crustacea. C. the class Chilopoda. D. the class Merostomata. E. the class Malacostraca
An organism's ecological role within the structure and function of a particular community is its:a
habitat. b. trophic level. c. population. d. ecological niche. e. competition.
Karoshi" means _______.
A. heart disease B. sing for your supper C. death from overworking D. job burnout