What did the researchers conclude based on the data shown in figure (b)?
A. Harvesting fish randomly led to an increase in average size over time.
B. Harvesting larger fish led to an increase in average size over time.
C. Harvesting larger fish led to a decrease in average size over time.
D. Harvesting fish in a slot limit led to a decrease in average size over time.
E. Harvesting fish in a slot limit led to an increase in average size over time.
C. Harvesting larger fish led to a decrease in average size over time.
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Which component of the blood is most important for clotting?
A. plasma B. leukocytes C. erythrocytes D. platelets E. All of the choices listed for this question are important for clotting.
In a certain bird species, clutch size (the number of eggs laid by a female in one breeding season) ranges from four to eight, and the most frequent clutch size is six. This phenomenon is an example of
a. sexual selection. b. stabilizing selection. c. disruptive selection. d. directional selection. e. artificial selection.
During ____, microtubules fasten the cell’s chromosomes to the spindle poles
a. prophase I b. anaphase II c. metaphase I d. metaphase II e. telophase I
Which of the following white blood cells accounts for about two-thirds of all white blood cells?
a. neutrophils b. basophils c. eosinophils d. dendritic cells e. B and T lymphocytes