Ecdysone, a steroid hormone, controls ____.
A. the menstrual cycle
B. molting in arthropods
C. the wake-sleep cycle
D. the formation of hormone receptors
E. the formation of sperm
Answer: B
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Which of the following could be considered a habitat island?
A. a person in line at the train station B. a lake surrounded by trees C. a patch of moss on a tree trunk D. All of the answer options are correct. E. None of the answer options is correct.
Fertilization is internal in sharks
Indicate whether the statement is true or false
A potential consequence of continued human population growth could be which of the following?
a. Humans change from exponential to logistic growth patterns. b. Carrying capacity of the planet will increase. c. Life expectancy decreases as resources become limited. d. Life expectancy increases as resource become more abundant.
A solution is a uniform mixture in which a ____ is dissolved completely in a ____
a. salt; solute b. solute; salt c. solute; solvent d. solvent; salt e. solvent; solute