Air is an essential component for all living things tos urvive.Air ios a mixture of gases,it contains oxygen and other gases.\trees take in carbon dioxide and release oxygen into the air .Land animals get oxygen from the air and in return they release carbon dioxide,which is used by plants for their survival.
Living organisms are composed of cells with highly organized systems, starting from the smallest cellular unit to the largest. Some organisms are unicellular, free-living and contain organelles to help carry out their life processes. More complex organisms are multicellular. These cells are organized into specialized roles, like tissues or muscles, where they each live co-dependently. Tissues are organized into organs. The organ system in composed of multiple organs that function together. An organism is a complex series of organ systems.
Living organisms that convert organic matter from the environment and convert into energy that chemical material inside our cells use in metabolism are called heterotrophs. Other organisms such as algae and plants that use photosynthesis to extract energy from the sun along with carbon dioxide and water to produce sugars are called autotrophs. Certain types of bacteria use chemosynthesis to couple the transformation of organic molecules into from their energy with inorganic molecules. Without this ability to extract, transform and use energy, organisms will quickly become unable to power their life functions.
Living organisms have the ability to reproduce. In plants and simple animals, reproduction is through the process of asexual reproduction. Asexual reproduction is defined as a single individual reproducing without the help of another individual. Examples of asexual reproduction include splitting or budding. More complex organisms participate in sexual reproduction, where two individual contribute genetic information to create a new individual with a unique combination of traits.