World human population in 2017 was approximately
A. 7 billion.
B. 8.5 billion.
C. 10 billion.
D. 7.5 billion.
E. 800 million.
Answer: D
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A) vascular cambium, producing cork; cork cambium, producing secondary phloem B) vascular cambium, producing secondary xylem; cork cambium, producing secondary phloem C) vascular cambium, producing secondary xylem; cork cambium, producing cork D) vascular cambium, producing secondary phloem; cork cambium, producing secondary xylem
In the peripheral nervous system, neuroglia called form the myelin sheath.
A. companion cells B. oligodendrocytes C. Schwann cells D. alpha cells E. trigger cells
The most common mutation in cystic fibrosis is the deletion of a single amino acid which results in a misfolded
protein. a. True b. False
Microbes that are introduced into a culture medium to initiate growth are called a(n)
A. inoculum. B. culture. C. specimen. D. medium.