Teratogenic effects of alcohol only occur during the first 12 weeks of pregnancy
a. True
b. False
Indicate whether the statement is true or false
False
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Prostate cancer kills about how many older men each year in the United States?
1.5,000 2.10,000 3.50,000 4.40,000 5.100,000
The two basic types of biogeochemical cycles are gaseous and ________
Fill in the blank(s) with correct word
Which one of the following is TRUE regarding nucleotides?
A) There are three different DNA nucleotides. B) DNA nucleotides are assembled into RNA by the process of dehydration synthesis. C) DNA nucleotides contain deoxyribose; RNA nucleotides contain sucrose. D) Nucleotides are bonded together by covalent bonds between the sugars and the phosphates. E) A DNA nucleotide could be made up of ribose, a phosphate, and cytosine.
Which pair includes animals that are both classified as suspension feeders?
a. lampreys and rabbits b. whales and clams c. clams and aphids d. aphids and whales