Suppose you wanted to compare two different stain removers to learn which one was better at removing food stains from clothing. What is the independent variable?
A.) amount of stain
B.) ability to remove stain
C.) brand of stain remover
Answer: B.) ability to remove stain
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What is the most common type of tissue in plants?
a. vascular b. dermal c. meristem d. ground e. cork
The probability of producing a normal child by
two parents who are carriers for an autosomal recessive disorder is a. 0%. b. 25%. c. 50%. d. 75%. e. 100%.
Since the beginning of the twentieth century, the rate at which CO2, CH4, and nitrogen oxides have been released into the atmosphere has outpaced the rate at which they can be recycled. Thus these ________ ________ are accumulating in Earth's atmosphere and are correlated with an increase in the global annual-mean surface air temperature.
What will be an ideal response?
In mammals and other animals, the expression of a specific gene can be turned off by the introduction of
a. long dsDNA. b. short dsRNA. c. short dsDNA. d. short ssDNA. e. long dsDNA.