Which of the following is most responsible for el niño?
unusually cold water in the atlantic causes an increase in wind activity.
the calming down of trade winds in the pacific, which leads to the buildup of warm water.
death of plankton and fish in the northern hemispheres.
disruption of the gulf stream.

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them