1.
Among the first plants to grow on the land regions of the Earth _____, which in prehistoric times grew to immense size
2.
Unlike fossil fuels, which can be used only once, wind and solar power _____of energy.
3.
_____ that the first cheese was probably made more than 4,000 years ago by nomadic tribes in Asia.
4.
Today _____ of the Earth live on a very small percentage of the Earth's land surface.
5.
It was in the year 1792 _____
6.
Many small birds use new sites for each nesting,_____ large birds often reuse the same nest.
7.
Plateaus are often referred to as tablelands _____ essentially flat-topped and stand conspicuously above an adjacent land area.
8.
Although many contemporary craft objects are not _____, they generally have their roots in function.
9.
_____ hearing aid was a tube called the ear trumpet, a flared tube held up to the ear.
10.
Most leaves are coated with a waterproof _____, or cuticle.
11.
The first glass factory _____ the North American continent was started in Jamestown, Virginia, in 1607.
12.
_____ in the desert is mainly due to the limited supply of desert water.
13.
In addition to painting highly acclaimed portraits, Mary Cassatt was _____ to several major art collectors.
14.
Springwater is _____ clean, since it has been filtered through permeable rocks, but all spring water contains some dissolved minerals.
15.
All eels spawn in the sea, the eggs hatching into transparent, ribbon-like larvae _____, feeding until they metamorphose into small eels.
