Sept 27‚ 2010 Chapter 4 * With four valence electrons‚ carbon can form four covalent bonds with a variety of atoms * This tetra valence makes large‚ complex molecules possible * Fundamental groups: Alkanes and Alkenes * The electron configuration of carbon gives it covalent compatibility with many different elements * The valences of carbon and its most frequent partners (hydrogen‚ oxygen‚ and nitrogen) are the “building code” that governs the architecture of living
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Republic of the Philippines DEPARTMENT OF EDUCATION Region IV-A CALABARZON DIVISION OF LAGUNA Santa Cruz Grade 7 - Integrated Science Diagnostic Test – SY 2012-2013 Direction: Choose the letter of the best answer and write it on your answer sheet. If the answer is not among the choices write e. Quarter 1 1. Which of the following is an example of a solution? a. Vinegar b. Halo-halo c. Sand in water d. Oil in water 2. Which statement describes the solute? a. It is the solid formed in solution
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More than one celled organisms grow by way of mitosis and the cytoplasmic division of body cells. On the other hand‚ meiosis occurs only in germ cells‚ which are put aside for the formation of gametes (sperm and egg). Reproduction by meiosis allows for species survival and it increases genetic variability. The process‚ during which the germ cells are generated is called meiosis. It represents nature’s solution to the problem of chromosome doubling that would occur‚ if two diploid cells‚ i.e.
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it was said by Herodotus ;an ancient Greek historian who’s regarded as the "Father of History" in Western culture.. he said"Egypt is the gift of the Nile" admiring the Nile river as God’s gift for the Egyptian people‚as without the Nile river;Egypt would have been desert.. The Nile was the lifeblood of Egypt. Their civilization depended on it (just as in every other river-valley civ.) Egypt was a glorious civilization‚ which contributed in many ways to two modern-day civilizations: the West and the
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They have from 80 to 250 inches of rain annually. Usually located near the equator‚ tropical rain forest cover less than 6% of Earth’s land surface‚ and around 40% of Earth’s oxygen is produced by tropical rain forest. Tropical rain forest have more kinds of trees than any other area in the world‚ in fact‚ a person can travel hundreds
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remarkable 50 plus eruptions have occurred. Looking into the geographic location and plate tectonic settings can easily help show why more than 50 eruptions have occurred in such a short period of geologic time. The Galapagos Islands are located on the equator west of the South American coast. Like many oceanic islands‚ they are formed by a mantle plume or hotspot like Hawaii. A major subduction zone currently sits under the islands‚ the two plates that are subducting beneath the South American and Caribbean
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and the cycle would continue. Over 3000 Zulus were dead‚ and the Europeans conquered the land. As the European empire was expanding North of Africa‚ they began to experience problems with the environment and climate. The North of Africa is near the equator of the Tropic of Capricorn. The Europeans could no longer farm‚ and their health began to decline. The European society is reliant on agriculture. Europeans settled in wet areas that were infected with mosquitos that carried malaria. The North African
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The tropical rainforest is a hot‚ moist biome found near Earth’s equator. The World’s largest tropical rainforests are in South America‚ Africa‚ and Southeast Asia. Tropical rainforests receive from 60 to 160 inches of precipitation that is fairly evenly distributed throughout the year. Tropical Rainforest: Animals Tropical rainforests support a greater number and variety of animals than any other biome. One of the reasons for this great variety of animals is the constant warmth. Tropical rainforests
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The Transatlantic slave trade and its causes were a major event in European and world history‚ its ongoing spiral of events leaves a major mark on many societies. Europeans greed and power led to the rise of the Atlantic slave trade. The cause of all these events was minor‚ and snowballed into the major problems of today. These events shine through to today where discrimination is around every corner and lurking everywhere. The Transatlantic slave trade steered history on a course to discrimination
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The Woman’s Christian Temperance Union to not only reform social and political change for women‚ but to teach women how to conduct themselves in the new society. She often referred to these teachings and trainings as the “WCTUniversity” where women learned how to think on their feet‚ speak in public places‚ and run an organization. However‚ their main objective for organizing the union was to ban the consumption and sale of alcohol. The union believed alcohol was one of the leading‚ contributing
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