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Environment

Chapter 9

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background extinction During most of the 3.56 billion years that life has existed on the earth, there has been a continuous, low level of extinction of species known as background extinction. endangered species has so few individual survivors that the species could soon become extinct over all or most of its natural range (the area in which it is normally found). extinction rate expressed as a percentage or number of species that go extinct within a certain time period such as a year. HIPPCO Habitat destruction, degradation, and fragmentation; Invasive (nonnative) species; Population and resource use growth (too many people consuming too many resources); Pollution; Climate change; and Overexploitation.

APES Chapter 10 Terms

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biodiversity hotspots an idea first proposed in 1988 by environmental scientist Norman Myers. These ?ecological arks? are areas especially rich in plant species that are found nowhere else and are in great danger of extinction. deforestation the temporary or permanent removal of large expanses of forest for agriculture, settlements, or other uses. ecological restoration the process of repairing damage caused by humans to the biodiversity and dynamics of natural ecosystems. old-growth forest an uncut or regenerated primary forest that has not been seriously disturbed by human activities or natural disasters for 200 years or more. overgrazing occurs when too many animals graze for too long and exceed the carrying capacity of a rangeland area.

Steller Sea Lion

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Creature Feature December 5th, 2013 With over one million identified living species, animals are the most diverse and extensive of all kingdoms of life. Humans, sea lions, and fish all belong in this same kingdom despite having very different structures and forms. Because of its significance to the Pacific Northwest, this report will look at the structure, behavior, phylogeny, and ecology of the Steller sea lion.

chapter 3

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Neher 1 Anthony Neher Mrs. Salzman AP Human Geography September 12, 2013 Scrap Nuclear Power In Sweden: Social Democrat Source: http://www.thelocal.se/50186/20130911/

Biodiversity

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http://www.conservation.org/where/priority_areas/hotspots/asia-pacific/Mountains-of-Southwest-China/Pages/biodiversity.aspx Geographic boundaries from mountains and valleys create "mini-hotspots" with distinct populations PLANTS: Arguably the most botanically rich temperate area in the world Roughly 12,000 plant species (40% of all plant species in China) From website: "About 3,500 species (29 percent) and at least 20 genera are endemic, including about 100 endemic ferns and 20 endemic gymnosperms. Two plant families are endemic to the hotspot: the Circaeasteraceae and the monotypic Acanthochlamydaceae." More than a quarter of the world's rhododendron species represented in the forests, about 230 species Some of these rhododendrons can grow to over 20 meters tall

Botany Vascular Tissue

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Vascular Tissue and Transport VASCULAR TISSUE & TRANSPORT Plants rely on specialized tissue, called vascular tissue, to transport water, nutrients, and the products of photosynthesis around the plant. The two types of vascular tissue are: xylem (zy-lum) phloem Water Transport Xylem - Transports water from the roots up to the rest of the plant in one way flow. Tracheids - Hollow cell in xylem with thick cell walls that resist turgor pressure Water Transport Water rises through the thin tubes by a process called capillary action (cohesion of water molecules and adhesion to solid surface). The thinner the tube, the higher the water will rise.

Botany Introclassification

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Classification Multicellular Eukaryote Have cell walls made of cellulose Carry out photosynthesis AND respiration Most are autotrophs A few are parasites (live on living organisms) or saprobes (live on dead organisms) Store energy as starch (carbohydrates) Sunlight Water Minerals Gas Exchange (CO2 in: O2 and some CO2 out) Transport of water and nutrients throughout the plant body Remember Photosynthesis: 6H2O + 6CO2 ? C6H12O6 + 6O2 (water + carbon dioxide + sunlight ? glucose + oxygen) Plants life cycles have two alternating phases known as alternation of generations: A diploid (2N) phase known as the sporophyte (spore producing plant). A haploid (N) phase known as the gametophyte (gamete producing plant)

This is stupid

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Chris Baldwin 5/20/11 Period 6 ?Ornithology 101? Wild Bird Page September/October 2008 As birds migrate, they are always looking for a tasty snack, and sometimes it is in the most unexpected places. One particular night, many ornithologists were out driving by a campus when after some minutes, some birds passed in front of the headlights. When the ornithologists followed inside the stadium, they saw thousands of migrating birds feasting on the moths that had collected around the stadium lights. There they counted thirty nine species. Of those that had been identified, sixteen were warblers. After migrating many miles, the birds found the large collection of moths and other assorted bugs collecting around the lights and on the ground.

Chapter 13 Outline AP World History

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Andy Ruano Period 1 Chapter 13 ? Tropical Africa and Asia, 1200- 1500 Thesis: Tropical Asia, during 1200-1500, was dominated by trade and agriculture as new ideas, customs, and religions spread across the region. Tropical Lands and Peoples People relied heavily on the environment and worked around it to produce food and supplies The tropical environment Due to the earth?s axis, the sun?s rays warm the tropics year round Most people reside between the tropics and the desert The monsoons affect land around the Indian Ocean Himalayas block cold air coming from the south Heavy rains supply the Niles annual flood The Nile is a key factor for the people to prosper in agriculture Humans Ecosystems People in the arid areas mostly relied on herding

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