Which of the following is NOT common to all vertebrates?
a. a cerebellum
b. a convoluted cerebrum
c. a hindbrain
d. a dorsal hollow spinal cord
e. a midbrain
B
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Darwin's three observations on the origin of species ___________
Fill in the blank(s) with the appropriate word(s).
Which pattern of diploid and haploid phases reflect the life cycle in plants?
a. alternation between haploid and diploid generations b. two haploid generations followed by a diploid generation c. one haploid generation followed by two diploid generations d. a single generation that limits the haploid state to gametes while the rest of the organism is diploid e. a single generation that limits the diploid state to gametes while the rest of the organism is haploid
The large, ancient land mass that contained all the continents is known as ____.
A. Laurasia B. Pangea C. Gondwana D. Atlantis E. Europa
A relationship that has been established based on a large amount of observational and experimental data is a(n)
A) fact. B) assumption. C) conjecture. D) theory.