Which of the following statements about the growth of the human population is correct?
A. None of the answer options is correct.
B. The human population has been growing
at the same rate since 1800.
C. The human population quadruples in size
every century.
D. The human population has doubled in size
in the past 10 years.
E. The human population first reached 1
billion in the 20th century.
A
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The hormone oxytocin is produced by the hypothalamus and stored by the posterior pituitary gland. There it is released to the target cells in the
A. kidneys and mammary glands. B. thyroid and adrenal cortex. C. pancreas and uterus. D. kidneys and ovaries. E. mammary glands and uterus.
Fill in the blanks to complete the following statements. Bacteria can produce __________ that are highly resistant forms of the organism that develop in response to adverse environmental conditions
Fill in the blank(s) with correct word
What removes nitrogen from the atmosphere?
a. denitrification b. nitrification c. mineralization d. nitrogen fixation e. assimilation
Most digestion occurs in the:
A) mouth. B) stomach. C) small intestine. D) large intestine.