Describe a common biotic and a common abiotic component of two terrestrial ecosystems. Then, describe a common biotic and a common abiotic component of two aquatic ecosystems.(
Two terrestrial ecosystems that can be compared are a grassland and a forest.
In a grassland, a common biotic component is the grass itself. These grasses form the primary vegetation, providing food and habitat for many other organisms such as grazing herbivores like bison or antelope. A common abiotic component in a grassland is sunlight, which plays a crucial role in photosynthesis that allows the grasses and other plants to grow.
In a forest, a common biotic component is the trees. They are the dominant species in a forest ecosystem, providing shade, shelter, and food for numerous animals such as birds, squirrels, and insects. Another common abiotic component in a forest is soil. The soil provides essential nutrients for plants to grow, acts as a medium for root penetration, and supports various microorganisms that aid in decomposition.
Two aquatic ecosystems that can be compared are a freshwater lake and a coral reef.
In a freshwater lake, a common biotic component is algae. Algae are microscopic plants that inhabit the lake and form the basis of the food chain, providing nourishment for small organisms like zooplankton. A common abiotic component in a freshwater lake is water. The water serves as a habitat for various aquatic organisms, provides a medium for their movement, and acts as a solvent for essential nutrients and gases.
In a coral reef, a common biotic component is coral polyps. Coral polyps are tiny marine animals that build colonies, creating the foundation of the reef ecosystem. They provide habitat, food, and protection for a tremendous diversity of marine life, including fish, mollusks, and crustaceans. A common abiotic component in a coral reef is calcium carbonate. The calcium carbonate comes from the skeletons of the coral polyps themselves, forming the rigid structure of the reef and creating various nooks and crevices for organisms to utilize as habitats.