It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest continent. This is taken as evidence that ____
A) island forms are descended from mainland forms
B) common environments are inhabited by the same organisms
C) island forms and mainland forms have identical gene pools
D) the island forms and mainland forms are converging
A
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Which of the following represents the chemical formula for urea?
a. H2N-CO-NH2 b. NH4Cl c. NH3 d. C5H4N4O3
Which system functions to maintain blood volume and composition?
a. endocrine b. circulatory c. respiratory d. lymphatic e. urinary
An individual is said to be ________ if it has two copies of the same factor for a given trait.
Fill in the blank(s) with the appropriate word(s).
After working a 12 hour shift at the hospital Louisa comes home and lies down on her bed. She is lying on her back looking up at the ceiling with her head resting on her arms. What is her body position?
a. Prone b. Anatomical position c. Supine d. Lateral e. Medial