Hummingbirds are birds that comprise the family Trochilidae. They are among the smallest of birds‚ most species measuring in the 7.5–13 cm (3–5 in) range. Indeed‚ the smallest extant bird species is a hummingbird‚ the 5-cm Bee Hummingbird. They hover in mid-air by rapidly flapping their wings 12–80 times per second (depending on the species). They are known as hummingbirds because of the humming sound created by their beating wings‚ which sometimes sounds like bees or other insects. To conserve energy
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Our updated Terms of Use will become effective on May 25‚ 2012. Find out more. Alfalfa From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search This article is about plant and flower. For the actor and character of the series Our Gang‚ see Carl "Alfalfa" Switzer. For the community in Central Oregon‚ see Alfalfa‚ Oregon. Alfalfa Medicago sativa Scientific classification Kingdom: Plantae (unranked): Angiosperms (unranked): Eudicots (unranked): Rosids Order: Fabales
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wrought by invasive taxa might be seen as ‘‘good’’ in ecological terms‚ for example if they reduce the impact of a previous invader (e.g. Cactoblastis vs. prickly pear: Freeman 1992) or if the new invader fulfils an important ecological role (e.g. pollination‚ predation) previously performed by a now-extinct taxon (Flannery 1994; Donlan et al. 2005). Disease transfer agents are an immense threat to human health and pests are the most common disease transfer vectors. Mosquitoes are one of the most efficient
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Abu Mena (Egypt) By: Porsha Lee. Instructor: Dr. Greta Bolin Date: 11/10/2013 Abu Mena was the name of a soldier who was an officer in the Diocletian army. Once Menas army won the war‚ he refused to kill any Christians‚ he declared his Christianity which made a tremendous motive for other Christians to bear the suffering and abuse from the Diocletian’s army ("Abu Mena-Unesco World Heritage Centre"
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BU224-01 November 23rd‚ 2010 HOMEWORK - UNIT 9 EXTERNALITIES & TAXES‚ SOCIAL INSURANCE‚ AND INCOME DISTRIBUTION Chapter 19: Problems 1 and 5 on pages 472-474 Chapter 21: Problems 4 and 9 on pages 517-518 Chapter 19 / EXTERNALITIES /25 1. a. Mrs. Chau plants lots of colorful flowers in her front yard. What type of externality (positive or negative) is described? (2pts) Positive externally. Is the marginal social benefit of the activity greater than or equal to the marginal
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Learning Pack for Biological Diversity – Unit 1 (Science in Action 9) Copyright 2005 – Developed by Edquest Resources (www.edquest.ca) 1 Learning Pack for Biological Diversity – Unit 1 (Science in Action 9) 2 ‘Focus in Action’ UNIT LEARNING PACKS These booklets are designed to provide Grade 9 students with all the resources needed to review or reinforce concepts‚ covered in the Alberta Science Curriculum‚ and included in the Grade 9 Science Final Exam in June. There are circumstances
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Aonla Aonla or Indian gooseberry (Emblica officinalis) is an indigenous fruit to Indian subcontinent. Owing to hardy nature‚ suitability to various waste-lands‚ high productivity/unit area (15–20t/ha)‚ nutritive and therapeutic value aonla have become an important fruit. Its fruits are a rich source of vitamin ‘C’. Aonla fruit is highly valued among indigenous medicines. It is acrid‚ cooling‚ refrigerant‚ diuretic and laxative. Dried fruits have been reported to be useful in haemorrhages‚ diarrhoea
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Topic 9: Plant Science 9.1 Plant Structure and Growth 9.1.1 Draw and label plan diagrams to show the distribution of tissues in the stem and leaf of a dicotyledonous plant. Cross-section of a stem Part of plant | Purpose | Epidermis | Surface of the stem made of a number of layers often with a waxy cuticle to reduce water loss | Cortex Tissue | Forming a cylinder of tissue around the outer edge of the stem. Often contains cells with secondary thickening in the cell walls which provides
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[pic] Introduction Global warming is the observed increase in the average temperature of the Earth’s atmosphere and oceans in recent decades and its projected continuation. In principle‚ global warming is neutral as to the period or causes‚ but in both common and scientific usage the term generally refers to recent warming and implies a human influence. Most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic
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Abstract Vineet Nayar is a charismatic leader that utilized disruptive innovation to improve HCLT in the IT industry. The rapidly changing IT industry was trending in the global environment. Although HCLT was increasing revenue it was not increasing their market share. To transform HCLT into a market competitor Nayar utilized associating‚ questioning‚ observing‚ networking and experimenting to reach and accomplish HCLT’s success. However‚ Nayar neglected the market status in the beginning of
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