Factory emissions, including sulfur and other gases, mix with air and rain to produce air pollution in the form of

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an

Hector is back from his morning run and is feeling light-headed because his energy is depleted which food item will provide him with a quick source of carbohydrates

This is the interaction of two organisms where one is and the other is neither nor harmed.