Summary #8 "Blood System" in other words the "Circulatory System"

The function of the circulatory system is to transport nutrients and oxygen to all the humans´ body. The blood have three types of cells and its function :

• Red Blood Cells: transport nutrients and oxygen.



•  White Blood Cells: Fight diseases( infections )

• Platelets:  Stop bleeding and cover injuries from bleed.
  
  

The most important organ on the Circulatory System  is the heart; is the only organ that pumps blood to all our body. There are three types of blood vessels in our body here is with each function are:

1. Arteries: Carry blood from the heart to the body.
2. Capillaries: Connect veins and arteries.
3. Veins: Bring the blood back to the heart.

The circulatory system isn´t only the heart and the three blood vessels; it is the lungs, the small intestine and the kidneys.

Summary #7 "How Ecosystems Change"

What happens when people abandon a city? Natures takes over; one example is the cities and the temples of Angkor in Camboidia (they were built between 820 and about 1150. Lest me explain you; the gradual replacement of one monnunityby another is called Ecological Succesion. The ecological succesion takes places in five steps:

1. Abandoned Farm---First Year: A comunity of crabgrass, insects, and mice invades the fields where corn or another crop once grew.
2. 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.
3. Four to six Years: The comunity is growing it have stunks, birds and others mammals like the mouse.
4. Twenty five years later: Pines agrew up there are much kinds of mammals like the fox, racoons,birds etc.
5. One hundred years later: know the forest is an decidious forest with deers,more trees etc.

Summary #6 "Places to Live Around the World"

    One of Earth´s large ecosystem, with its climate, soil, plant and animals is called biome. Each person live in 1 biome it could be : 

 1. Taiga: A cool, forest biome of conifers in the upper Northern Hemisphere.

 

 2. Tundra: a cold, forest biome of the farnorth, marked by spongy topsoil.

3. Desert: A sandy or rocky biome, with a little precipitation and a little plant life.

4. Deciduous Forest: a forest biome with many kinds of trees that lose their leaves each Autumn.

5. Tropical Rain Forest: a hot, humid biome near the equator, with much rainfall and a wide variety of life.

Each biome have characteristics:

• Location
• Climate( how much rains in that biome?)
• Soil
• Plants
• Animals

But do you know about a Water Biome? There are two types of  Water Biome:                                 

• Fresh Water:

1. Plankton: Biotic factors that floats in the water.
2. Neckton: Biotics factors that swim throught water.
3. Bethos: Bottom-dweling organism.

• Salt Water:

1. Upper Region: 100-200meters deapht
2. Lower Region: 200-1000meters deapht

Summary #5 "Surviving in Ecosystems"

In this topic you will learn about how organisms can help or hinder the survival of other organisms. Certain factors control the growth and survival of living things. Anything that controls the growth or survival of a population is called a limiting factor. Some limiting factors are nonliving. Sunlight, wind, water, and temperature are examples of nonliving limiting factors. Living organisms can also be limiting factors. For example, the number of prey in an ecosystem can determine the number of predators the ecosystem can support. Plants live almost everywhere on Earth. Plants can survive because they have developed special characteristics. Characteristics that help an organism survive in its environment are called adaptations. One of the harshest areas for plant growth is a desert. The barrel cactus is adapted to the conditions of the desert. The plant's roots are very shallow and grow only about 3 inches into the dry soil. When rain falls, the roots catch the rain and soak it up very quickly. The stem of the cactus also helps it survive. It stores water. Different kinds of organisms interact with each other in a number of different ways. There are relationships between different kinds of organisms. In nature a relationship between two kinds of organisms is called symbiosis. There are different kinds of symbiosis. Sometimes both organisms benefit from the relationship. Sometimes one organism benefits while harming the other. Sometimes only one benefits. When a relationship between two organisms benefits both of them it is called mutualism. Yucca trees and yucca moths cannot survive without each other. Each helps the other reproduce. A relationship in which one kind of organism lives on or in another organism and may harm that organism is called parasitism. The organisms that live on or in other organisms are called parasites. Fleas are parasites of dogs and cats. The fleas live off the blood of these animals and give nothing back but itching and irritation. When one organism benefits from another without harming or helping it is called commensalism. Many animals have this kind of relationship. There are certain tropical fish that live unharmed among the poisonous tentacles of sea anemones. The anemones provide safety for the fish. Yet the fish neither harm nor help the anemones.

1. Adaptation: Characteristics that help an organism to  in an environment.

2. Simbiosis: In nature a relationship between two kinds of organisms.

3. Mutualism: When a relationship between two organisms benefits both of them.

Yucca tree

4. Parasitism: A relationship in which one kind of organism lives on or in another organism and may harm that organism.

5. Commensalism: When one organism benefits from another without harming or helping.

Summary #4 "Cycles of Life"

There are many types of cycles like: the water cycle, the carbon dioxide cycle and nitrogen cycle. This will be the cycles we will see today. The water cycle is the continious movement of water on Earth´s surface and the air, changing from liquid to gas to liquid. The carbon dioxide cycle is the continuos movement of carbon between the atmosphere and living things. The nitrogen cycle is the transfer of nitrogen from the atmosphere to plants and back to the atmosphere and directly to plants again. If you don´t know you are part of many cycles like I named in the first part of this paragraph, I would explain to you this cycles.

• The Water Cycle: I will start to explain in the recoletion because the water cycle dose not have an end or start.

1. Recollection: Water flows into rivers, lakes, streams , etc. Most of the water is absorb by the soil and use to help plants made the process of photosynthesis.

2. Evaporation: When the sunlight is hot enought, from water would born gases this is evaporation the evaporation rises up like gas thats why in the meaning of water cycle said the water travels on Earth from liquid to gas to liquid.

3.Condensation: Condensation is one of the part of the process of the water cycle before the transform of liquid to gas.

4.Transpiration: It can be of human or plants because when we run we sweet and the is evaporated and is the same with the plants.

 

5.Precipitation: Is the time when the liquid to gas to liquid starts, It will rain !!!

6. Runoff: The water goes on the streets or mountains or wherever place you can find an altitude and rains.

7. Groundwater: The soil absorbs the water and the process will continue.

• The Carbon Dioxide Cycle: The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.

Nitrogen Cycle: The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms. This transformation can be carried out via both biological and non-biological processes.

Thanks for your attention

If you don´t understand post your question where you see the coments.