Plants first colonized the land during the Mesozoic Era
a. true
b. false
Answer: b. false
Biology & Microbiology
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Isotopes that are unstable and decay when their nucleus breaks up into elements with lower atomic numbers, emitting significant amounts of energy in the process, are called:
A. energetic B. ionic C. radioactive D. isometric
Biology & Microbiology
Which of the following is most likely to stop sexually transmitted diseases (STDs)?
A) IUD B) diaphragm C) tubal ligation D) latex condom
Biology & Microbiology
_______ are the simplest animals, being little more than tubes of cells that filter microscopic pieces of food from the water.
a) chordates b) nematodes c) cnidarians d) sponges
Biology & Microbiology
________ is the process of using water to break down polymers to their monomer subunits
Fill in the blank(s) with correct word
Biology & Microbiology