Sometimes, the surface of the pacific ocean warms up, causing changes in the weather in some areas. this phenomenon is called el niño. el niño causes the amount of rainfall in some parts of the united states and south america to increase. it also causes droughts to occur in southeast asia and australia. droughts occur when an area receives less rain than it normally does over a certain period.

explain how earth’s spheres may be affected by the droughts brought on by el niño.

What best describes lactic acid fermentation?

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?