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