Following warmer-than-average water temperatures in the eastern Pacific Ocean in 1997, a drought occurred in Northern China while southern China
was flooded. What likely caused these weather events?
O A. The jet stream
O B. An occluded front
C. El Niño
D. La Niña
Please help:)

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds