The cactus with flowers ________ an attractive houseplant.

Fossil hunters ________ dinosaur remains around the world.

Fossil evidence ________ that many dinosaurs died in a short period of time.

The root systems of cacti ________out to collect as much water as possible.

Still, clusters of plant life ______ common in some deserts.

Businesses of every kind _________ many acres each day.

The noisy neighbors ____ a constant problem.

The band director's biggest disappointment _____ the clarinets.

the individual bright colors _________ a dull blur at dusk.

Temperatures at night __________ many degrees cooler.

Stomach contents __________ what animals and plants lived at the same time.

If a sudden rainstorm _________ the tracks up with mud, the deer print will be preserved, at least for a time.

The number of tree species _________ to be about 3,000.

Hoots, chirps, and roars from every corner _____ throughout the day.