A cross between a blue bird (BB) & a white bird (WW) produces offspring that are blue and white speckled (BW). Create that cross on the Punnett Square below:

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Explanation:

The correct answer is scanning electron microscope.

This type of microscope uses electrons to get a detailed view of the surface of a specimen and as the question states, is the most powerful microscope. Transmission electron microscopes are also very powerful, but aren’t as effective for viewing the surface of a specimen. Classroom microscopes are not very powerful and do not allow for such detailed viewing.

Hope this helps!