Although Darwin and Wallace understood the central importance of heritability among organisms to the process of
evolution, they could not explain how new variations arose or how they were passed to the next generation.
Indicate whether the statement is true or false.
False - variability
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If you had to increase hormonal secretions in a test subject, but you did not want to affect sodium levels, which two hormones could you use?
A. parathyroid hormone and atrial natriuretic peptide B. atrial natriuretic peptide and aldosterone C. aldosterone and cortisol D. atrial natriuretic peptide and cortisol E. antidiuretic hormone and cortisol
For a molecule to be reduced, it gains electrons from the environment. How else is a molecule reduced?
a. gaining hydrogen atoms b. losing hydrogen atoms c. gaining oxygen atoms d. losing oxygen atoms e. both losing hydrogen atoms and gaining oxygen atoms
Blood slows down in arterioles due to the large cross-sectional area.
a. true b. false
Which organisms have a hydrostatic skeleton with a
soft body wall? a. earthworms b. spiders c. sponges d. crabs e. insects