It took more than 100,000 years for the human population to grow to one billion individuals and took about ____ years
to add five billion more.
a. 200
b. 20,000
c. 100,000
d. 200,000
e. 500,000
ANSWER: a
You might also like to view...
If the fluid inside of a cell has a 5% solute concentration, what would happen if the cell was placed in a solution with a 10% solute concentration?
A. Water molecules would leave the cell by osmosis. B. Water molecules would enter the cell by osmosis. C. Water molecules would cross the membrane in both directions, but there would be no net movement of water molecules. D. There would be no movement of water molecules in either direction. E. Solute molecules would leave the cell by osmosis.
What group is the closest living relative to the group that gave rise to tetrapods?
A. Sharks B. Ray-finned fish C. Lobe-finned fish D. Lamprey
What can be said about animal and vegetal poles?
A. Isolated vegetal cells develop as ectoderm. B. When animal pole cells are cultured with vegetal pole cells, some of the animal pole cells become mesoderm. C. Isolated animal cells develop as endoderm. D. When animal pole cells are cultured with vegetal pole cells, some of the vegetal pole cells become mesoderm.
Treatment of an animal bite for possible rabies includes
A. infusion of the wound with human rabies immune globulin (HRIG). B. washing bite with soap or detergent. C. postexposure vaccination with HDCV. D. debridement. E. All of the choices are correct.