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Which of the following is a characteristic of all insects?

Grey whales have the heaviest parasite load of all whales. This is in part due to its:

______ have highly efficient circulatory systems, and complex nervous system and sensory organs.

Bacteria reproduce by ————-

Sessile animals…

Planarians

The only amphibians to entirely escape dependence on aquatic habitats are _____.

Single-celled photosynthetic protistans, including most of the euglenoids, chrysophytes, and dinoflagellates, are members of the _____ , the “pastures” of most aquatic habitats.

These _____ earth deposits are used in insulation, abrasives, and pool filters.

Which term does not describe a virus?