The earliest humans primarily used tools to ____.
A. assist in locomotion
B. provide protection
C. facilitate the processing of food
D. ward off predators
E. construct shelters
Answer: C
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What will be an ideal response?
Which of the following strategies of sexual reproduction will result in the most genetic diversity?
A. Sexual reproduction of homothallic species B. Sexual reproduction of heterothallic species C. Sexual reproduction via arthroconidia D. Sexual reproduction via sporangiospores
Which chordate has a four-chambered heart, no bladder, no teeth, and lack of a penis in the males?
a. a bird b. a crocodile c. a bat d. a frog e. a shark
The actinoplanetes can be found in ________ habitats.
A. freshwater B. soil C. marine D. All of the choices are correct.