The idea that species can remain unchanged for millions of years and then rapidly evolve within a short time is 

A. adaptive radiation.
B. convergent evolution.
C. punctuated equilibrium.
D. gradualism.


C. punctuated equilibrium.

Biology & Microbiology

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The types of bonds found in nucleic acids are: 

A. phosphodiester bonds. B. peptide bonds. C. ionic bonds. D. non-polar covalent bonds.

Biology & Microbiology

The absorption and re-radiation of longwave radiation by gases in the atmosphere is called the ________

Fill in the blank(s) with correct word

Biology & Microbiology

The first step in urine formation is ____________________, which takes places across glomerular capillaries. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

Energy gathering or concentrating mechanisms that allow light to be collected more efficiently during photosynthesis are called 

A. mitochondria. B. photosystems. C. light-independent reactions. D. ribulose.

Biology & Microbiology