Explain how extremes of pH limit growth. Majority of organisms live or grow in habitats between pH 6 and 8 obligate acidophiles: Euglena mutabilis-alga that grows between 0 and 1.0 pH Thermoplasma-archae that lives in hot coal piles at a pH of 1 to 2, and would lyse if exposed to pH 7.
Most of the current California wildfires are in the north, including a large one in Mendocino County and several others in the Sierra Nevada, the north coast and the San Joaquin Valley.
Hundreds of wildfires scorch Canada as extreme heat spreads. Forest fires blaze along highway 969 in southern Saskatchewan, Canada, on June 29, 2015. A long-lasting, record-smashing heat wave in the Pacific Northwest and western Canada continues to fuel hundreds of wildfires in three Canadian provinces and several states across America.