3.666666 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.<span>
</span>
A system of interlocking and interdependent food chains.
Technoloy can be used to drill oil, as a result pollute water, and soil, green house gas, which can cause global warming, and if oil leaks into the ocean, as a result the marine sea animals can get sick and die.