Summary 3: Food Chains and Food Webs

This topic is about food Chain and Food Web, A food Chain like this one moves the Sun's energy through  a community from producers, such as plants, to consumers, such as animals, A grasshopper or mouse eats the plant. It takes in the energy is released for the plant eater to use.Some of the energy is also stored in its tissues. Some is lost as heat, ATexas horned lizard may snap up a grasshopper before a meadowlark can eat it. A bullsnake may complete with a badger for a mouse. Another organism may eat the bullsnake or badger.Food chains and food webs exist in all ecosystem.They all have producers. the producers on land include grasses, trees, and all the organisms that use the Sun ' s energy to make their own food. In the oceans the main producers are algae, Consumers get energy from the food made by other organisms. Can be grouped according to the type of food they eat. Herbivores eat producers. Herbivores in turn are eaten by carnivores, animals that eat other animals, Living things that hunt other living things for food are predator The hunted called prey. The relantionship between predators and prey are a key part of both food chains and food web.

Summary 2: Living things in their enviroment

This topic is about ecosystems, ecosystems are all the living and nonliving things in a area interacting with each other. we have the limiting factors that are biotic and abiotic factors for examples of biotic are fongi, bacteria plants, animals , and protist the abiotic are light, water, soil, temperature and minerals, All organisms need water. Their bodies are 50 to 95 percent water. The processes keep living things alive like photosynthesis and respiration can only take place in the presence of water. Living things need minerals, such as calcium, iron, phosphorus, and nitrogen. Some living things, lile plants and algae, need sunlight to make food. Animals need oxygen to produce the energy for their bodies. Plants and algae need carbon dioxide. The enviroment must also have the right temperature for organisms to survive.

summary: Energy Resources

energy resources are divided in this 5 types of alternative energy sources that are wind, water, solar and geothermal energy and that the fossil fuels it pollutes and biomass in this word has a definition bio means life, mass means amount of matter, the energy sources has definitions harnesing the wind- wind energy, modern waterwheels- water energy, earth furnace- geothermal energy, the people use energy in some business, homes etc. the electricity the heat in many other homes and business comes from electricity. so does the energy devices, such as light, computers, radios, TVs and washers. Some small devices and flashligths and portable CD players get their electricity from batteries. Most of the other devices use electricity from a wall outlet. That electricity comes from a power plant. Electricity from that plant reaches your home thought wires. However the power plant makes electricity by using energy from burning fuels such as coal , oil, natural gas. It takes a lot of energy to move a car, bus, or train.