Explain the importance of autotrophic organisms with respect to energy flow and nutrient cycling in ecosystems.

Autotrophic organism are the base pillars of the ecosystem which maintains the flow of nutrients and energy in an ecosystem.

The energy from the sun is converted in the form of chemical energy which is first used by the plants and then passed on to the next organism.

If there will be no autotrophs then there will be no flow of energy as no organism can trap sunlight and transfer energy to another levels.

Hence, the flow of energy and nutrients is like Sun → Producers→ Primary consumers→ secondary consumers→ tertiary consumers.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.