THE LIVING WORLD

                           LIFE FORMS
 Every species of living things is related to other that evolved from the same ancestors.  They form groups of species that are related to other groups in the same way, like a giant family tree. This tree has six main stems- the six kingdoms of life .Three of the kingdoms are made up of organisms that are mostly too small to see without a microscope , but the others consist of the animals, plants, and fungi.

                      THE SIX KINGDOMS
  ARCHAEA-
         The first life form to evolve on earth were the microscope organisms called archaea. They have a very simple structure just a single cell enclosing a tiny drop of watery fluid containing the molecules vital to life .Some archaea live in hostile places such as hot, acidic, springs.

 BACTERIA-
         These are very like archaea, with the same structure .But their chemistry is different, showing that they evolved separately . Some bacteria cause disease, while others are essential to our survival , one type , cyanobacteria , produced nearly all the oxygen in the atmosphere.

 PROTISTS-
             Also known as algae and protozoans , these are mainly microscopic , single- celled organisms. Unlike bacteria  or archaea , each cell has a nucleus that contains, the main life-giving molecules. There are also other structures with in the cell that make food or turns it into energy.

 FUNGI-
         Although they seems to grow like plant, fungi feed on other living or dead organisms .Some fungi are single -celled microbes, but most fungi form spreading ,multi-celled root networks .These produce mushrooms and moulds like those that grow on decaying fruit.

  PLANTS-
          Green plants are multi-celled living things that use the energy of sunlight to make food in the process , they release oxygen into the air ,which is vital to animal life . They mostly live on land or in fresh water, and range from low-growing mosses to magnificent trees.

 ANIMALS-
             Like plants, all animals are multi-celled organisms. But unlike them,they cannot make their own food ,and they cannot make their own food ,and must eat other organisms instead,,Most do so by moving around ,using their senses to find the food they need, and this has led to the evolution of intelligence.