Which reproductive strategy does an organism use if it reproduces slowly and has only one offspring each time it reproduces? a)r-strategy b)environmental load c)endangered d)k-strategy

The answer is D. K-strategy reproduction involves  reduced quantity of offspring with a corresponding increased parental investment. This is as opposed to r-strategy reproduction which involves the increased quantity of offspring at the expense of individual parental investment. An example of K-strategy reproduction is that of whales.

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)