Which of these gases, when mixed with moisture in the atmosphere, can form acid rain? a. oxygen b. nitrogen c. hydrogen d. sulfur dioxide
any substance in an environment that occurs in amounts too large to be tolerated by humans, plants, and animals is called
a. acid rain
b. pollution
c. toxic waste
d. environmental waste

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

Approximately what portion of the foods that we eat have been genetically modified in some way? a.fewer than 10% b.about 50% c.nearly 100%

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.