With __________ speciation, populations in physical contact speciate.
Fill in the blank(s) with the appropriate word(s).
sympatric
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Predict what would happen if the pulmonary vein returned blood to the right atrium.
A. The expected cardiac cycle would occur-this is the normal path. B. Abnormally high levels of oxygenated blood would be pushed into the systemic circuit. C. Oxygenated blood would be kept in a circular path between the heart and lungs-it would not reach the systemic circuit. D. Abnormally high levels of deoxygenated blood would be pushed into the systemic circuit.
An embryo sporophyte, its reserves of food, and the seed coat are collectively referred to as a ________
a. nut b. seedling c. fruit d. seed
34.4 The Hypothalamus and Pituitary Gland Fill in the blank(s) with the appropriate word(s)
Microtubules have an outer diameter of
A) 7 nm. B) 8—12 nm. C) 25 nm. D) 7 mm. E) 25 mm.