Which of the following statements is TRUE about the passage?

With reply of Walker’s colleague, knowledge of wind patterns will be very helpful.

Habit of seabirds in Alaska is similar to those in the Northern Hemisphere.

Byrd and Tobish think that heavy rainfall and storms cause mortality for chicks, which has already been a convincing proof.

Hatch thinks that it is too early to determine all the problems that are caused by El Nino.