Evolutionary adaptations that help diverse animals directly exchange matter between cells and the environment include _____
A) a gastrovascular activity, a two-layered body, and a torpedo-like body shape
B) an external respiratory surface, a small body size, and a two-cell-layered body
C) a large body volume, a long, tubular body, and a set of wings
D) an unbranched internal surface, a small body size, and thick covering
B
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Background extinction rates once eliminated seven to eight species per year
a. True b. False
A new species of mouse is discovered that can sprint extraordinarily rapidly but also fatigues quickly. How would you expect its muscle composition to compare to that of an ordinary house mouse?
A. more fast glycolytic fibers B. more fast oxidative fibers C. more slow oxidative fibers D. fewer fast glycolytic fibers E. more slow glycolytic fibers
The process of displaying and organizing data to represent connections is known as
A) algebra. B) differential equations. C) statistics. D) graphing. E) correlation and causation.
Which component is the oxidizing agent in the following chemical reaction?
4 Fe + 3 O2 ? 2 Fe2O3 a. rust b. iron c. water d. oxygen e. hydrogen