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The 1991 eruption of Mount Pinatubo in the Philippines' Luzon Volcanic Arc was the second-largest volcanic eruption of the 20th century, behind only the 1912 eruption of Novarupta in Alaska. Eruptive activity began on April 2 as a series of phreatic explosions from a fissure that opened on the north side of Mount Pinatubo .
On November 30, 2021, PHIVOLCS reported a weak explosion occurred on Mt. Pinatubo between 12:09 p.m. and 12:13 p.m., which produced a plume. [27] The agency later confirmed it was a phreatic explosion produced by hydrothermal fluids near the surface, rather than a magmatic eruption. [28]
In 1941 the estimated population of the Philippines reached 17,000,000. [42] Manila's population was 684,000. [43] By then, some 27% of the population could speak English as a second language, while the number of Spanish speakers as first language had further fallen to 3% from 10 to 14% at the beginning of the century.
[71] [62] [228] [229] [23] Predicted exponential population growth or any "population explosion" did not materialise; instead, population growth slowed. [110] [37] Critics suggest that enough resources are available to support projected population growth, and that human impacts on the environment are not attributable to overpopulation. [166 ...
Human population projections are attempts to extrapolate how human populations will change in the future. [2] These projections are an important input to forecasts of the population's impact on this planet and humanity's future well-being. [3] Models of population growth take trends in human development and apply projections into the future. [4]
Taal Volcano (IPA:; Tagalog: Bulkang Taal) is a large caldera filled by Taal Lake in the Philippines. [1] Located in the province of Batangas about 50 kilometers (31 mi) south of Manila, the volcano is the second most active volcano in the country with 38 recorded historical eruptions, all of which were concentrated on Volcano Island, near the middle of Taal Lake. [3]
Graph of world population over the past 12,000 years . As a general rule, the confidence of estimates on historical world population decreases for the more distant past. Robust population data exist only for the last two or three centuries. Until the late 18th century, few governments had ever performed an accurate census.
Taal Volcano Main Crater Lake (IPA:; or simply Main Crater Lake [3]), historically known as Yellow Lake, [4] is a lake inside the main crater of Taal Volcano.The origin of the lake is uncertain but is thought to have formed by rainwater.