Columns Are Lettered in Descending Sequence from Left to Right

question 21

True/False

Columns are lettered in descending sequence from left to right.

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Definitions:

Tracheal Tubes

Tubes that make up part of the respiratory system in insects, allowing gas exchange directly with body cells.

Spiracles

Openings on the surface of some animals, such as insects, spiders, and some fish, which lead to respiratory systems, allowing air to enter the body.

Annelids

A phylum of invertebrate animals characterized by their segmented bodies and include earthworms, leeches, and marine worms.

Diving Marine Mammals

Marine animals, such as whales, seals, and dolphins, adapted to diving deep under water to feed, communicate, or avoid predators.