Which question could be tested in a scientific manner?
what causes some people to be color-blind?
why should people be nice to other people?
why is the color purple better than the color red?
what are the best shoes to wear when exercising?

After hydrogen and oxygen, witch element makes up almost all of the most common substance in your body

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?

The most effective way to provide children with safety messages is to