Which of these is the best explanation of how a smooth round stone became smooth? -
answer It was in a stream for a long
When a lobster grows a claw to
... [Show More] replace one that was lost, the process is called - answer
regeneration.
Any astronomical body that revolves around a larger body is called - answer a satellite.
In chemistry, to be classified as an organic substance, a substance must contain -
answer Carbon atoms.
Which element does NOT contain any neutrons? - answer hydrogen
The chemical formula of a compound describes the elements the compound contains
and the - answer ratio of elements in the compound.
What is the symbol for the hydroxyl ion? - answer Н30
Which of the following is a renewable resource? - answer natural gas
How many atoms are in a single molecule of water (H20)? - answer 3
Regeneration in man is limited to - answer healing of wounds.
When scientists measure a liquid's resistance to flow, they are measuring the liquid's -
answer viscosity.
When sodium atoms form sodium ions, they - answer lose electrons.
A perpetual-motion machine can never be built because it is not possible to eliminate -
answer inertia,
A human skin cell divides by - answer mitosis.
The filament in an electric light bulb is made from - answer tungsten.
Terry earns a $250 salary plus $5 per sale. How many sales must Terry make to earn
$765 altogether? - answer 103
Jerry walked a dog from 6:40 a.m. to 7:30 a.m. one day. If he was paid at the rate of $6
per hour, how much did he earn that day? - answer $5.00
How many feet of chain fence are necessary to enclose a dog pen that is square and
has an area of 64 square feet? - answer 32
A woman is looking for a bigger square office. She finds an office twice the area of her
current office. If the perimeter of her current office is 88 feet, how many square feet is
the new office? - answer 968 sq ft
A train goes twice as fast downhill as it can go uphill, and 2/3 as fast uphill as it can go
on level ground. If it goes 120 miles per hour downhill, how long will it take to travel 45
miles on flat land? - answer 1/2 hour [Show Less]