A biologist wants to test the effectiveness of a new food additive on causing growth in mice. An effective control group is one that:
A. was fed the same ration without the food additive
B. ate a higher concentration of food additive
C. was kept in different conditions across the city
D. ate a lower concentration of the food additive
Answer: A
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a. Euglena. b. Anopheles. c. Trichomonas. d. Paramecium. e. Entamoeba.
All organisms use DNA as their genetic material. This type of support for evolution would be from the field of __________.
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_________________ is the process that results from the union of gametes from two different parents.
Fill in the blank(s) with the appropriate word(s).
Which structures are restricted, causing an asthma attack?
a. Trachea b. Bronchioles c. Alveoli d. Capillaries