Protein deficiency in childhood results in
A. small size.
B. mental retardation.
C. poor health.
D. All of the above are correct.
D. All of the above are correct.
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What is the smallest unit of life?
A. An atom B. A molecule C. An organism D. A cell
If a lung were to be found in a mollusc, where would it be located?
A) mantle cavity B) coelom C) incurrent siphon D) visceral mass E) excurrent siphon
Fluorescent antibodies can be used to separate mixtures of cells into relatively pure populations with a fluorescence cytometer
Indicate whether the statement is true or false.
Which of the following is not a problem of deforestation?
1.It will reduce the future production of fossil fuels.
2.It reduces primary productivity by eliminating photosynthesizers.
3.It increases global warming by increasing radiation reflection.
4.It increases global warming through carbon dioxide liberation.