What process signals the end of one cycle and the beginning of another in the menstrual cycle

Asea turtle has washed up on a remote section of a beach. this known as a stranding occurs when a dead,sick or injured sea turtle washed up on the shoreline. which statment best explain why stranding should be reported immediately to local authorities

What are the ingredients of oobleck?

What is the one part of the nucleotide  that differs among the other different nucle  tides?