A). How do living things interact?
Living things find a way to live off the land. Not with artificial flavouring or stuff like that. But it may not last unless we take good care of it. Living things interact by:
Learn about viruses and their surroundings, and how they are created.
What is a Virus
A virus s a small, NONLIVING particle that invades and then reproduces inside a living cell. Viruses are considered nonliving because they are not cells. They cannot: * use energy to grow
* make food
* take in food
* produce waste
Like living organisms: they do multiply.
Examples of Viruses
There are many viruses in the world. We have all experienced one at one time or another. If you have ever had the flu or a cold, that is a virus. Those viruses are relatively minor, but there are some that are life-threatening. * small pox
* cold sore
* yellow fever
Viruses can also cause disease in animals and plants.
Who is Safe?
No living organisms are safe from viruses.
What is Classification?
Classification is a tool for understanding relationships of living things. With classification, you group similar things together. Why is Classification Important?
Scientists use classification systems to help them make sense of the world around them. They use classification to organize information and objects. The world would be a crazy place if we didn't have a way of organizing things. Some Examples
Examples of classification systems you use everyday include: * breakfast foods, lunch foods and dinner foods
* food pyramid
* your closet (shoes in one place, shirts in another)
* your likes and dislikes
* How to Classify
Classification is actually pretty simple. Here is the basic process of classification: * Step 1: Choose something to classify.
* Step 2: Determine the groups into which you will classify your items. It would be helpful to spend some time looking over what you are grouping to make these determinations. * Step 3: Place each item into a group based on how the item's characteristics match the characteristics of the group. * The Linnaeus Classification System
In the mid 1700's a Swedish scientist by the name of Carolus Linnaeus created a naming system called Binomial Nomenclature, in which each organism was given a two part name. Part One: The first part of an organism's name is called its GENUS. The genus is a classification grouping that contains similar, closely related organisms. For example pumas and housecats are both classified in the genus fells. These organisms share the similar characteristic of sharp, retractable claws and behaviour of hunting. * Part Two: The second part of an organism's name is called its SPECIES. The species is a group that can mate and produce fertile offspring. The species name sets one genus apart from another. It is a further breaking down (subgroup) of the genus. The species name often comes from a distinguishing feature of the or where it lives. For example a housecat is a Felix domesticus. Levels of Classification
Today we use a classification system based on seven layers of organization. These include from largest to smallest (with human classification in parentheses: * Kingdom (Animalia)
* Phylum (Chordata)
* Class (Mammalia)
* Order (Primates)
* Family (Hominidae)
* Genus (Homo)
* Species (Sapiens)
__________________________________________________________________________________________ 3).Interactions of Organisms
Why Organisms Interact
Organisms (including humans) interact with each other all the time, whether we know it or not. Most of the interactions between species involve food: * competing for the same food supply
* avoiding being eaten
Energy and the Food Chain
A food chain does more than show who eats whom. Eating is...
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