Geographic biodiversity "hot spots"
A. have the highest vascular plant species richness and ?3 unique ecosystems.
B. have the greatest number of species that have lost >50% of their original range.
C. contain ?10% of the world's vascular plant species and have lost >50% of their original range.
D. have ?1500 endemic plant species and have lost ?70% of the original habitat.
D. have ?1500 endemic plant species and have lost ?70% of the original habitat.
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Which of the following statements about the placenta is false? a. The mother's body disposes of wastes for both mother and child
b. The placenta begins forming early in pregnancy. c. Maternal and fetal blood mix in the placenta. d. Embryonic blood vessels exchange substances with maternal blood.
What is the most ecologically important animal in the ocean in terms of habitat formations?
a. Sea anemones b. Ctenophores c. Jellyfish d. Coral polyps
Solar aquatic systems constructed by biologist John
Todd work with all of the following EXCEPT a. decomposers that degrade waste. b. plants that grow on nutrients released. c. heat from sunlight that speeds degradation. d. an artificial marsh used to filter algae. e. aquatic fish and birds used to finish the process.
Translation converts the information stored in ________ to ________
A) DNA... RNA B) RNA... a polypeptide C) DNA... a polypeptide D) RNA... DNA