Vascular plants and air-breathing animals first appeared during which time period?
a. Silurian period
b. Permian period
c. Cambrian period
d. Ordovician period
e. Cretaceous period
a
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Urinalysis can be used to identify four of the following. Which one is the exception?
a. intoxication b. prostate cancer c. kidney disease d. diabetes mellitus e. previous heart attack
The surgical removal of one oviduct would
A. Decrease the time between ovulation and implantation. B. Decrease the number of eggs produced by the ovary. C. Prevent half of a woman's eggs from reaching the uterus.
Explain why a dry, hot, breezy day can result in the leaves of certain plants having to completely replace their water
each hour.
What will be an ideal response?What is believed to be the ancestral group to the animals?
a. Archaebacteria b. Colonial protists c. Bacteria d. Flagellated fungi e. Green algae