Making bread involves a chemical reaction. A chemical reaction involves starting materials (the reactants) and the substances produced (the products).Which material is a product of this chemical reaction?
Answer(s): C
Adults generally breathe in and out 12 to 20 times per minute. People sitting down breathe more slowly than those standing up. The older adults become, the more slowly they breathe. Children breathe twice as fast as adults. Women generally breathe faster than men.Which of the following persons would most likely breathe the slowest?
Answer(s): D
When single cells reproduce, 1 cell produces 2 cells. These 2 cells produce 4 cells. These 4 cells produce 8 cells, and so on. This growth results in an increase in the number of cells.Which assumption must be made to understand why the cell number increases in this way?
DDT is a toxic substance. The illustration below lists DDT levels in various organisms.Which statement best explains why the amount of DDT is higher in the eagle than in the otherorganisms?Exhibit:
-- Exhibit --Radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X rays, and gamma rays are forms of radiant energy that make up the electromagnetic spectrum. Each portion of the electromagnetic spectrum has waves that vary in frequency and wavelength, but all can be used by people. Radio waves can be used to carry music and voices for great distances through air, X rays can be used for diagnostic work in medicine, and infrared radiation can be used for heating and drying.-- Exhibit --Most genetic damage is caused by very short wavelengths of the electromagnetic spectrum.Which of the following statements would support this statement?
Answer(s): A
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