Life's Organizational Hierarchy Practice Problems
In biology, the vertical scale describes the _______, and the horizontal scale describes the _______.
Erwin Chargaff found that in DNA, the ratios of adenine (A) to thymine (T) and guanine (G) to cytosine (C) are equal. This is the best example of study at the _____ level in life's hierarchy.
Which of the following is at the most complex level of organization among the others?
Using a mudcrab as the sample organism living in a mangrove ecosystem, identify which of the following images illustrates the correct biological hierarchy.