The chart compares volcanoes with other kinds of natural events that can cause a disaster. Explain why volcanic eruptions are unique and why monitoring active
volcanoes is so important.
Warning Times and Durations of Natural Hazards
Warning time Duration time of hazard
Weeks
Months
to
Days
Days to
to
months
months years
Flood
Weeks
Hurricane
Earthquake
Wildfire
Volcanic eruption
Event

in situ hybridization has been widely used for research applications, including clinical cytogenetics, gene mapping, tumor biology and studies of chromosome evolution.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).