The bonds between the atoms that make up water molecules are called
a. covalent bonds.
b. hydrogen bonds.
c. ionic and covalent bonds.
d. covalent and hydrogen bonds.
Ans: a. covalent bonds.
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When making scientific decisions in one's life, it is best to ask questions, gather and evaluate information and evidence, and carefully consider the sources of the material. This process is called ________
Fill in the blank(s) with correct word
A new virus has recently been identified that has been linked to certain birth defects. A pregnant woman is infected with this virus in the fifth month of her pregnancy. However, at birth, the infant shows no signs of the characteristic birth defects. What is the most likely explanation?
A) The virus actually doesn't cause birth defects. B) The woman was likely infected after the virus' critical period. C) The woman was actually infected by a different virus. D) The woman was likely infected during the virus' critical period.
Select the correct sequence of events involved in regulating secretion of thyroid hormones
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a. 1, 2, 4, 5, 3 b. 2, 1, 4, 5, 3 c. 3, 1, 4, 5, 2 d. 3, 4, 1, 2, 5 e. 2, 4, 5, 1, 3
What is the half-life of an element?
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