extinct organisms; that is, they belong to species that are no longer living anywhere on Earth. (3) The kinds of fossils found in rocks of different ages differ because life on Earth has changed through time.
Transfer of energy from one living to another in a food chain is called pyramid energy.
So simply we can energy pyramid shows how much energy passes from one living to another in a food chain.
Food chain always begins with autotrophs i.e. green nature (plants). Which becomes producers.
There are different types of organisms based on food habits and their environment.
Please rephrase the question, it doesn't make sense.
The answer: Yes, because plants photosynthesis to absorb Carbon Dioxide and convert it in to Oxygen. We humans breathe the oxygen that is produced from plants.