Which of the following kinds of extinction is caused by humans?
A) background extinction
B) mass extinction
C) anthropogenic extinction
Ans: C) anthropogenic extinction
You might also like to view...
Seagrasses are important in all the following except:
a. nutrient recycling. b. providing a habitat for animals. c. stabilizing sediments. d. being consumed by most estuarine herbivores.
Which proteins initiate transcription in eukaryotes by recognizing sequences within the promoter region of a gene and attracts RNA polymerase?
A. repressors B. transcription factors C. inducers D. poly-A tails E. TATA boxes
The production site for white blood cells is the
a. bone marrow. b. spleen. c. liver. d. kidney. e. tonsils.
Which statement is true?
a. Breathing rate and depth are completely under voluntary control. b. A person can commit suicide by holding his or her breath. c. The contraction of the diaphragm and muscle of the rib cage are under the control of areas of the brain. d. There are chemoreceptors in the brain that monitor carbon dioxide content in the blood and control breathing. e. The contraction of the diaphragm and muscle of the rib cage are under the control of areas of the brain, and there are chemo-receptors in the brain that monitor carbon dioxide content in the blood and control breathing.