Question

How are even small animals important in an ecosystem?

Answer 1

For subsistence, species in an ecosystem rely on each other. Trophic levels refer to the respective location of species within the chains or webs of ecological food. For their food, second-level organisms or herbivores depend on green plants. A third level is composed of carnivores, which prey on herbivores.

Complete answer:
An ecosystem is a geographical environment where plants, animals as well as many other species, biotic factors, as well as essential factors such as climate and landscape, work together to form the nature of life. Ecosystems consist of biotic or living components and abiotic variables such as temperature, pH, soil and water or non-living components.
In an ecosystem, even a small organism is important since each organism forms a part of the food chain or network or ecosystem of food.
In the well-being of the world, every little animal within the ecosystem has a vital role. If because of any mismatch, one species is extinct, it can have major cascading effects in the ecosystem. In reality, even a small bee is, for instance, a crucial job in the factory of nature.

There are four types of ecosystem types: artificial, terrestrial, lentic and lotic. The ecosystems are parts of the biomes that are climatic zones of life and organisms. In these biome's ecosystems, there are living as well as non living environmental factors which are known as biotic and abiotic factors.

Note: The phytoplanktons are small microscopic algae (plants) which are responsible for forming the base of the marine food chain. Phytoplanktons are the most abundant organisms in the cold waters with abundant nutrients.