Ponds are .
a. typically larger than lakes
b. able to develop self-contained ecosystems
c. distinguished by easily observed currents
d. another name for stream pools

Give reason sugarcane waste can be recycled into useful products

Why did the united states lead a coalition to invade iraq in 1991? o a. there was a fundamentalist revolution in iraq. o b. iraq had invaded iran. o c. an oil embargo had started in the middle east, o d. iraq had invaded kuwait.

Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. wavelength c. brightness d. intensity