Pitch and Frequency are basically the same thing, but frequency can be quantified more easily. (Quantified is assigning a value). A piano may play a pitch of C, but the freque â¦ ncy could be 512 hertz. C is the pitch.
What is a dead zone? Hypoxic zones are areas in the ocean of such low oxygen concentration that animal life suffocates and dies, and as a result are sometimes called dead zones.. One of the largest dead zones forms in the Gulf of Mexico every spring. Each spring as farmers fertilize their lands preparing for crop season, rain washes fertilizer off the land and into streams and rivers.
Three people have been bitten by sharks along the upper Texas coast this year - which is a higher number than normal. The dead zone has spread across 5,800 square miles (15,020 sq km) of the Gulf of Mexico and is so devoid of oxygen that sea life cannot live in it.