Summary#3 "Food Chains and Food Webs"

Food Chains and Food Web are the path of energy in food from one organism to another.Food chains and food webs are representations of the predator-prey relationships between species within anecosystem  or habitat. In the food chains one animal eats another animal and who eats is who have much energy. Ex. A lion eats a zebra(the lion have all the zebra´s energy). Herbivores are eaten by carnivores. Have you never ask to yourself waht is a predator and what is a prey. The answer is here, a predator isa living thing that hunts other living things for food. Prey is a living thing that is hunt for food. If you didn´t know that you are an omnivoros?--- Yes you are!Omnivoros is an animal that eats both plants and animals. All humans are omnivoros exept the herbivores.

Food Chain

Food Web

Summary #2 "Living Things and Their Enviroment"

An ecosystem is all the living things and nonliving things in an area interacting with each other. Ecology is the study of how all these things interact in order to survive. Freshwater ecosystems cover less space than saltwater ecosystem. Saltwater ecosystems can cover entire oceans. It doesn´t matter where they are or what they look like, all ecosystems have the same parts. The nonliving parts of an ecosystem are the abiotic factors. Abiotic factors include water, minerals, sunlight, air, climate, and soil. These organisms---make up the biotic factors, or living parts, of an ecosystem. Each organism contributes something to the others in the ecosystem. Plant and algae are called producers. They produce oxygen and food that animals need. Animals consume, or eat, plants need to make food. They are very important part of an ecosystem. Fungi and bacteria are decomposer.

Ecosystem (habitat)

Summary #1 "Energy Resources".

You use a number of different energy sources each day. Try tracing it back to its source. Many homes, schools, and bussines get heat by burning oil or natural gas. Some older buildings still burn coal for heat. The heat in many others homes and business come from electricity. So does the energy to run many common devices, such as light, computers, radios, TV´s, and washers. Some small devices such as flashlights and portable CD players get their electricity from batteries. Most of the other devices use electricy from a wall outlet. That electricity comes from a power plant. Electricity from that plant reaches your home through wires. There is an energy that is use in all the world is the Fossils Fuels. Heat from burning fossil fuels can be used directly to heat homes, schools, businesses, and factories. Fossil fuels are the remains of once

 living things. Coal formed from the remains of dead plants buried in acient swamps and forest. Natural gas and oil formed from the remains of tiny ocean plants and animals. These sea creatures died and fell to the bottom of the ocean. There is a form of get energy without pollute is the Alternative Energy Source: a source of energy other than the burning of a fossil fuel. These are examples of Alternative Energy Source: 

1. Water energy, 2.Wind energy, 3.Geothermal energy and 4.Solar energy.

Wind energy

Solar energy

Geothermal energy