A. Phosphorus
Over 44 years, Dr. Schindler and his team tested the effects of phosphorous, nitrogen, and carbon on algae growth. Their research showed that phosphorus, and not carbon or nitrogen, increases algae growth in aquatic ecosystems.
it is a type of tax or money
Food vacuole is used to store and digest food in amoeba
I think its either, the suns not out, or the temperature decreases
