The burning of fossil fuels and other human activities are contributing to a rise in average global temperatures. In Alaska and other cold regions, these rising temperatures are leading to melting glaciers, a phenomenon known as glacial retreat. In Kenai Fjords National Park in Alaska, retreating glaciers have exposed rock, giving scientists an up-close view of primary succession at work. The most recently exposed rock is still bare; however, rocks that have been exposed longer are covered in moss and lichens. In regions that have been uncovered for longer periods of time, small plants and shrubs are growing. In areas that have been exposed for decades, cottonwood trees grow. Cottonwoods are shade-intolerant trees that grow rapidly. In regions that have been exposed for at least 100-200 years, a climax community with a wide variety of trees and plants grow. ANALYZE How do human societies influence natural processes such as primary succession?
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Biology, 21.06.2019 16:00, farhadi2
The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?
Answers: 2
Biology, 22.06.2019 07:00, geezelouise808
Which of the following will a bacterium produce when a human gene is added to its genome? question 4 options: human carbohydrates a protein made up of both human and bacterial properties the human protein coded for by the human gene human plasmids that can be isolated from the bacterium
Answers: 2
Biology, 22.06.2019 10:40, ari313
Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.
Answers: 2
The burning of fossil fuels and other human activities are contributing to a rise in average global...
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