Select all of the CORRECT statement(s) below.多项选择题

A

An insect can have both compound and simple eyes.

B

The ommatidium is the structural and functional unit of vision in the insect compound eye.

C

Most insects lack red-sensitive visual pigment, but many have ultraviolet vision, which we lack.

D

Unlike compound eyes, simple eyes respond to light intensity but do not form an image (although they may form a coarse image).

E

When you get a PET scan, turn on a microwave, use your TV remote control, or are scanned at the airport, you are utilizing non-visible portions of the electromagnetic spectrum.

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