Answer:
Organisms sense and respond to changes in their environment.
Organisms are composed of one or more cells.
Life is sustained by inputs of energy and nutrients.
Genetic information in the form of DNA is passed to offspring.
Explanation:
Not all organisms acquire energy by consuming other organisms. Most green plants, for example, are able to produce their own food by photosynthesis.
Organisms are able to sense and respond to changes in their environment. Without these, survival would be limited. Plants are able to sense and respond to light, water, gravity, etc. while animals are able to sense dangers and run away from them.
According to the cell theory, all living organisms are made up of cells. The simplest organism must contain, at least, a cell, while more complex organisms are made up of several cells.
Life is generally sustained by the input of energy from the sun and that of nutrients from reservoirs such as soil. Plants are able to manufacture their foods by using the energy from the sun and other animals either depend directly or indirectly on plants for their own energy. Important nutrients are cycled from their reservoirs to living organisms and vice versa.
Genetic information in the form of DNA is passed from one generation to another during reproduction. Reproduction is an important attribute of living organisms and it remains the only way life is sustained on the planet.
