The greatest contributor(s) to allopatric isolation is(are)
a. geographical barriers.
b. different ecological niches.
c. polypolidy.
d. hybrid inviability.
e. behavioral peculiarities.
a
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Osteoporosis is a common condition that essentially results when homeostasis cannot be maintained in ________ and ________
A) osteoclasts; osteoblasts B) osteoblasts; osteons C) chondroblasts; osteoclasts D) canaculi; chondroblasts E) canaculi; osteoclasts
Diet and exercise reduce the number of fat cells as well as the amount of fat stored in each cell
Indicate whether the statement is true or false
What is a leaf blade attached to a stem by a stalk-like structure?
A) internode B) stoma C) petiole D) node
Light-dependent reactions generate
A. glucose and O2. B. ATP and CO2. C. O2, ATP, and NADPH. D. ATP and NADPH. E. light.