What is chirsping?

Frogs are positive pressure breathers What does this mean? How do speakers impact on lives of daily humans? What is difference between an artersian well and an ordinary well? What is the difference between goo off and goo gone? If the force from the engine is bigger than the force of the air resistance? How many kilometers would you drive if you drove 8000 miles? If I were a government minister so how would some knowledge of science be useful to me? How many inch are in one miter? Which question can be answered by science m? Can a nail float in water? Which metal reacts steadily with acid to give an orange-brown solution? Who sponsered Bartholomeu Dias? What is 135 000 000 in scientific notation? How do people kill seals? How To Know When A Sump Pump Will Help Dry Out Your Basement? What is 8 cm and 5 mm? What is the function of vascular tissues in plants? Why was a drawing of the leaf made before the experiment began? Which metal is used in clinical thermometer? At any given time how much of the earth is in day?