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Examine Organismal Biology homework help here
a. the present forms of all existing species are the result of natural selection.
b. the wide diversity of life on earth has descended from previously existing species.
c. traits acquired during a life time were passed on to subsequent generations.
d. A and B.
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Sharks live in seawater. Their tissues are isotonic to seawater, but their concentrations of sodium ions, potassium ions, and chloride ions in cells and extracellular fluids are similar to those of freshwater fishes. How is that possible?
A) Urea and trimethylamine oxide contribute to intra- and extracellular osmolarity in shark tissues. B) Metabolic intermediates of sharks tie up intracellular chloride and potassium ions. C) Their blood is hypotonic to their tissues. D) They excrete large quantities of electrolytes.
Which of the labeled graphs above represents the age span of worker bees primarily occupied by
packing pollen?
a. A b. B c. C d. D e. E
The Environmental Protection Agency estimates that approximately ________% of rural wells and water systems have some type of pollutant in them
Fill in the blank(s) with correct word
Jackie went to the sink at the end of lab to wash her hands. After removing her watch and rings, she turned on the water, wet her hands, added soap and thoroughly rubbed and lathered her hands for 30 seconds, cleaning the backs of her hands, her fingernails, and between her fingers. She then turned off the water, and reached for the paper towels to dry her hands. Identify the correct statement below.
Jackie should not have removed her watch and rings prior to washing her hands. Jackie should have applied the soap to dry hands, and then added the water for lathering. Jackie should have used paper towels to turn off the faucet. Jackie used the correct protocol for washing her hands.