The amphibians are believed to have arisen from ancestral:a
chondrichthyean fishes.
b. actinopterygian fishes.
c. reptiles.
d. sacropterygian fishes.
e. amphibians.
d
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Aside from HIV infections, the greatest number of global disease-related deaths result from
1.diarrheas. 2.various respiratory infections. 3.hepatitis. 4.malaria. 5.tuberculosis.
Mary, who has type O blood, is expecting a child with her husband, who has type B blood. Mary's husband's father has type A blood. What is the probability that the child will have type O blood?
a) 0% b) 10% c) 25% d) 50% e) 75%
In printed scientific names, only the _______________ is capitalized.
A) family B) class C) species D) kingdom E) genus
During seasonal bird migration, which of the following typically occur?
A. Spring flight to warmer areas B. Autumn flight to breeding location C. Summer flight to cooler areas D. Spring flight to breeding grounds E. Autumn flight to shorelines