Because of its association with tools, the earliest human was called ____________ meaning "handy man."
A. Homo habilis
B. Homo erectus
C. Homo sapiens
D. Neanderthal
E. Cro-Magnon
A. Homo habilis
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In the respiration of terrestrial animals, “ventilation”
refers to a. the bulk movement of air in and out of the organism. b. the diffusion of gases across a membrane. c. the diffusion of gases in and out of blood cells. d. the transport of gases to and from body cells. e. all of these.
Overspecialized adaptations
A) promote survival in a wide range of habitats. B) are the result of natural selection. C) are found only in species with very wide geographic ranges. D) enable a species to be more adaptable to environmental changes. E) enable a species to be more independent of other species.
Which of the following is a normal skin resident?
A. Clostridium perfringens B. Staphylococcus aureus C. Streptococcus mutans D. Staphylococcus epidermidis
In the Hardy-Weinberg Frequency p^2 represents __________.
a. homozygous dominant b. heterozygous c. homozygous recessive d. the entire population