Density-independent factors that limit population growth include ____.
A. parasites
B. temperature
C. disease
D. competition
E. predation
Answer: B
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An organism with a temperature growth optimum near 80°C and a pH growth optimum between two and three is usually referred to as a(n) ________.
A. thermophile B. halophile C. thermoalkalophile D. thermoacidophile
Which of the following is the greatest threat to
most species survival?
a. overharvesting b. pollution c. habitat loss d. oceanic desalinization e. none of these is a threat to species survival
Which of the following tissue types is characterized by having cells suspended within an extracellular matrix consisting of a mixture of fibrous proteins and carbohydrates?
A. Muscle B. Nervous C. Epithelial D. Connective E. Digestive
oncogene
What will be an ideal response?