Bone mass decreases with the activity of osteoblasts.
a. true
b. false
Answer: b. false
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Using the geological time scale, scientists can determine the absolute age of rocks and fossils
a. True b. False
Nitrogenous waste is excreted from Malpighian tubules mainly in the form of
a. nitrate. b. ammonia. c. uric acid. d. amino acids. e. urea.
Graphed from 10,000 BCE to 2010, as shown below, the global human population
A. None of the answer choices is correct. B. shows the typical curve of exponential growth. C. is showing clearly that humans are at Earth's carrying capacity for our species. D. shows the typical curve of logistic growth. E. has reached 0% growth rate, as shown by the data plot at 2010.
Which of the following would be a characteristic of a K-selected species?
A) Individuals tend to die at all ages in the life span. B) Most die at relatively young ages. C) All K-selected species live very long life spans. D) Most K-selected species live until older age.