Which of the following taxa are extant (have at least some members that are still living; opposite of extinct)?
A. Ornithischia
B. Lepidosauria
C. Saurischia
D. theropods
E. ichythosaurs
B. Lepidosauria
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Some clones of the original immune cells are __________ cells, long-lived B and T cells reserved for
future encounters with the antigen. Fill in the blank(s) with the appropriate word(s).
In a highly basic solution, pH = 13, the dominant form of glycine is:
A) NH2—CH2—COOH. B) NH2—CH2—COO?. C) NH2—CH3+—COO?. D) NH3+—CH2—COOH. E) NH3+—CH2—COO?.
The molecule that traps the sun's energy is
A. ATP. B. glyceraldehyde-3-phosphate. C. chloroplast. D. chlorophyll.
________ would help prevent the creation of leachate.
A- adding hazardous chemical to solid waste prior to landfilling B- Adding O2 to solid waste prior to landfilling C- Capping the landfill when it is filled to capacity D- Adding H2O to solid waste prior to landfilling E- Using a single-liner system rather than a double-liner system