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1 SI Base Unit for Time ☐
2 pH Scale Extremes ☐☐
2 pH Scale Extremes ☒☐
3 Types of Rocks ☐☐☐
3 Types of Rocks ☒☐☐
3 Types of Rocks ☒☒☐
4 Conic Sections ☐☐☐☐
4 Conic Sections ☒☐☐☐
4 Conic Sections ☒☒☐☐
4 Conic Sections ☒☒☒☐
5 Programming Languages ☐☐☐☐☐
5 Programming Languages ☒☐☐☐☐
5 Programming Languages ☒☒☐☐☐
5 Programming Languages ☒☒☒☐☐
5 Programming Languages ☒☒☒☒☐
6 Whole Human Organs that can be Transplanted ☐☐☐☐☐☐
6 Whole Human Organs that can be Transplanted ☒☐☐☐☐☐
6 Whole Human Organs that can be Transplanted ☒☒☐☐☐☐
6 Whole Human Organs that can be Transplanted ☒☒☒☐☐☐
6 Whole Human Organs that can be Transplanted ☒☒☒☒☐☐
6 Whole Human Organs that can be Transplanted ☒☒☒☒☒☐
7 Nobel Physics Prize Laureates ☐☐☐☐☐☐☐
7 Nobel Physics Prize Laureates ☒☐☐☐☐☐☐
7 Nobel Physics Prize Laureates ☒☒☐☐☐☐☐
7 Nobel Physics Prize Laureates ☒☒☒☐☐☐☐
7 Nobel Physics Prize Laureates ☒☒☒☒☐☐☐
7 Nobel Physics Prize Laureates ☒☒☒☒☒☐☐
7 Nobel Physics Prize Laureates ☒☒☒☒☒☒☐
8 Taxonomic Ranks ☐☐☐☐☐☐☐☐
8 Taxonomic Ranks ☒☐☐☐☐☐☐☐
8 Taxonomic Ranks ☒☒☐☐☐☐☐☐
8 Taxonomic Ranks ☒☒☒☐☐☐☐☐
8 Taxonomic Ranks ☒☒☒☒☐☐☐☐
8 Taxonomic Ranks ☒☒☒☒☒☐☐☐
8 Taxonomic Ranks ☒☒☒☒☒☒☐☐
8 Taxonomic Ranks ☒☒☒☒☒☒☒☐
9 Types of Mammals ☐☐☐☐☐☐☐☐☐
9 Types of Mammals ☒☐☐☐☐☐☐☐☐
9 Types of Mammals ☒☒☐☐☐☐☐☐☐
9 Types of Mammals ☒☒☒☐☐☐☐☐☐
9 Types of Mammals ☒☒☒☒☐☐☐☐☐
9 Types of Mammals ☒☒☒☒☒☐☐☐☐
9 Types of Mammals ☒☒☒☒☒☒☐☐☐
9 Types of Mammals ☒☒☒☒☒☒☒☐☐
9 Types of Mammals ☒☒☒☒☒☒☒☒☐
10 Types of Clouds ☐☐☐☐☐☐☐☐☐☐
10 Types of Clouds ☒☐☐☐☐☐☐☐☐☐
10 Types of Clouds ☒☒☐☐☐☐☐☐☐☐
10 Types of Clouds ☒☒☒☐☐☐☐☐☐☐
10 Types of Clouds ☒☒☒☒☐☐☐☐☐☐
10 Types of Clouds ☒☒☒☒☒☐☐☐☐☐
10 Types of Clouds ☒☒☒☒☒☒☐☐☐☐
10 Types of Clouds ☒☒☒☒☒☒☒☐☐☐
10 Types of Clouds ☒☒☒☒☒☒☒☒☐☐
10 Types of Clouds ☒☒☒☒☒☒☒☒☒☐
9 Essential (for Humans) Amino Acids ☐☐☐☐☐☐☐☐☐
9 Essential (for Humans) Amino Acids ☒☐☐☐☐☐☐☐☐
9 Essential (for Humans) Amino Acids ☒☒☐☐☐☐☐☐☐
9 Essential (for Humans) Amino Acids ☒☒☒☐☐☐☐☐☐
9 Essential (for Humans) Amino Acids ☒☒☒☒☐☐☐☐☐
9 Essential (for Humans) Amino Acids ☒☒☒☒☒☐☐☐☐
9 Essential (for Humans) Amino Acids ☒☒☒☒☒☒☐☐☐
9 Essential (for Humans) Amino Acids ☒☒☒☒☒☒☒☐☐
9 Essential (for Humans) Amino Acids ☒☒☒☒☒☒☒☒☐
8 Planets ☐☐☐☐☐☐☐☐
8 Planets ☒☐☐☐☐☐☐☐
8 Planets ☒☒☐☐☐☐☐☐
8 Planets ☒☒☒☐☐☐☐☐
8 Planets ☒☒☒☒☐☐☐☐
8 Planets ☒☒☒☒☒☐☐☐
8 Planets ☒☒☒☒☒☒☐☐
8 Planets ☒☒☒☒☒☒☒☐
7 Group One Elements ☐☐☐☐☐☐☐
7 Group One Elements ☒☐☐☐☐☐☐
7 Group One Elements ☒☒☐☐☐☐☐
7 Group One Elements ☒☒☒☐☐☐☐
7 Group One Elements ☒☒☒☒☐☐☐
7 Group One Elements ☒☒☒☒☒☐☐
7 Group One Elements ☒☒☒☒☒☒☐
6 Quark Flavors ☐☐☐☐☐☐
6 Quark Flavors ☒☐☐☐☐☐
6 Quark Flavors ☒☒☐☐☐☐
6 Quark Flavors ☒☒☒☐☐☐
6 Quark Flavors ☒☒☒☒☐☐
6 Quark Flavors ☒☒☒☒☒☐
5 Scientists with Elements Named After Them ☐☐☐☐☐
5 Scientists with Elements Named After Them ☒☐☐☐☐
5 Scientists with Elements Named After Them ☒☒☐☐☐
5 Scientists with Elements Named After Them ☒☒☒☐☐
5 Scientists with Elements Named After Them ☒☒☒☒☐
4 Fundamental Forces ☐☐☐☐
4 Fundamental Forces ☒☐☐☐
4 Fundamental Forces ☒☒☐☐
4 Fundamental Forces ☒☒☒☐
3 Ear Bones ☐☐☐
3 Ear Bones ☒☐☐
3 Ear Bones ☒☒☐
2 Moons of Mars ☐☐
2 Moons of Mars ☒☐
1 Nucleotide Unique to RNA ☐
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