Summary 8: A blood system

Blood is mixture of liquid cells and we have 3 types of blood vessels and cells are: in cells: red blood cell,white blood cell,platelets,the blood vessels are: capillaries,arteries,veins,we have and organ that pomps blood that is heart and we types of blood: that is A, AB, B and O, The blood travels all the body, a physcian Dr. Charles Richard Drew developed techniques for processing and storing blood plasma for transfusions. His work led to the establisment of the American Red Cross blood bank, Blood is a specialized bodily fluid that delivers necessary substances to the body's cells – such as nutrients and oxygen – and transports waste products away from those same cells. we have functions of the 3 types of blood cell that are: the red blood cell transports nutrients and oxygen, white blood cell can fight diseases, platelets can stop bleeding and cover injuries and bleeding, In the blood vessels functions are in the arteries can carries blood from heart to the body, veins can bring back the blood to the heart and finally the capillaries can connect arteries and veins.

Summary 7: How Ecosystems Change

This topic is about the ¿how ecosystems change? is for example From Farmland to Forest, In first year we have a abandoned farm: a community of crabgrass, insects, and mice invades the field where corn or another crop once grew, Then we have Second and Third Years: tall weeds, such as asters, ragweed, and goldenrod, and tall grasses grow among the crabgrass. The crabgrass can't easily survive in the shade cast by the taller weeds. It begins to die out. Rabbits and seed-eating birds move in. Next Four to Six Years Later: The hot, dry field of tall weeds provides a perfect environment for pine seeds sprout. Pine trees begin to grow and shade the weeds, which begin die out. More birds join the community, as do small mammals like opossums and skunks. Twenty-Five Years Later: A pine forest has replaced the old farm field. Yet the number of new pine seedings drops because they can't grow in the shade. Seeds of decidous trees such as maple, hickory, and oak sprout and take root. Larger animals like racoons and foxes begin to visit,  Finally in One hundred Years Later: The forest is now mostly decidious trees. Thes trees are habitats of many different kinds of birds and small animals, such as squirrels. Deer, racoons, and foxes also live in the forest, that happens when a ecosystem change from Farmland to Forest.

Summary 6: Places to Live Around the World

Around the world have 5 Places to live that are taiga, tundra, desert, decidous forest, tropical rain forest, the desert has a location of midlatitudes, climate;  Generally very hot days, cool nights; precipitation less than 10 inches a year, Soil; Poor in animal and plant decay products but often rich in minerals, plants: None to cacti, yuccas, bunch grasses, shrubs, and a few trees, Animals are rodents, snakes, lizards, tortoises, insects, and some birds . The sahara Africa is home to camels, gazelles etc. Tundra a cold, treeless biome of the farnorth, marked by spongy topsoil, taiga a cool forest biome of conifers in the upper Northern Hemisphere, desert is a sandy or rocky biome, with little precipitation and little plant life, decidious forest aforest biome with many kinds of trees that lose their leaves each autumn, Tropical rain forest is a hot, humid biome near the equator, with much rainfall and a wide variety of life, biome is one of earth's large ecosystems, with its climate, soil, plants, and animals.

Summary 5: Surviving in Ecosystems

This topic is about Surviving in ecosystems that organisms can help or hinder the survival of other organisms, in limiting factor has two that are abiotic and biotic examples of biotic plants, animals, fungi, protists and bacteria, abiotic examples are light, water, temperature, air, soil, minerals. symbiosis has examples  tha are mutualism, parasitism, commensalism, the meanings of symbiosis is a relationship between two kinds of organisms over time, mutualism are between two kinds of organisms that benefits both, parasitism is in which one kind of organism lives on or in another organism and may harm the organism, commensalism is between two kinds of organisms that benefits one without harming the other, examples are orchid- plant, anemone- clown fish, Parasitism examples are dog harms, hea benefit, plants- orchid, mutualism examples are yuca- tree- Yuca months (reproduction), Hower- bee.

Summary 4 : Cycles of Life

This topic is about of the cycles of life that is Water, carbon and nitrogen cycle, the water cycle is divided in condensation, precipitation, Evaporation, Runoff, Collection and the meaning is the continous movement of water between Earth's surface and the air, changing from liquid to gas to liquid, the carbon cycle is divided in oxygen, carbon dioxide, Photosynthesis, plants, animals, Car exhaust, Decaying matter, Death, decay Storage in Recycled  Carbon nature recycles carbon in the carbon cycle. At the same time, oxygen is also being cycled through ecosystems, the meaning is the continous transfer of carbon between the atmosphere and living things, the nitrogen cycle is divided in Air, is made up of about 78 percent nitrogen gas, nitrogen- fixing bacteria, Decomposers , Bacteria, Plants Denitrifying bacteria, Animals, the nitrogen compounds, Anmonia, nitrites, Nitrates, Nitrites and Anmonia, the meaning is the transfer of nitrogen from the atmosphere to plants and back to the atmosphere and directly into plants again.