In a national park in Zambia, the percentage of tuskless female elephants increased from 10% in 1969 to 38% in 1989. What was the direct cause of this increase?
A) illegal poaching by ivory hunters
B) fierce competition between male and female elephants for limited food resources
C) periodontal disease
D) The cause of this increase is unknown.
Ans: A) illegal poaching by ivory hunters
You might also like to view...
Explain the relationship between cellular respiration and photosynthesis with respect to the storage and release of chemical energy
What will be an ideal response?
A danger of nitrogen saturation is
A) increased productivity. B) basic soils. C) acidic soils. D) lack of carbon.
A mother brings a child into the ER with a severe nosebleed that won't stop bleeding. She also tells the doctors that the child bruises very easily in response to very minor accidents
Given the information in the text, the doctor orders some tests and finds that the young boy has ________. A) anemia B) hemophilia C) embolus D) leukemia
In the 20th century, scientists harnessed the natural metabolic reactions of bacteria to make ________ for the first time in an industrial setting.
A. soy sauce B. acetone C. wine D. cheese E. alcohol