- Biotic factors are living organisms that take part in an environment, for example, plants and animals are biotic factors.
- Abiotic factors are all non-living parts of an environment, for example, the temperature, the soil, the sunlight, etc.
The shell is the part of a living organism, so it can be classified as a biotic factor.
A reptile is an animal member of the class Reptilia, they can be classified as biotic factors.
The sea turtle is a living organism, so it can be classified as a biotic factor.
The temperature is a non-living part of the environment, it can be classified as an abiotic factor.
The substrate is the base where living organisms live, for example, the bottom of the marine habitats formed by rocks, sand, or gravel), it can be classified as an abiotic factor.
Detritivores are organisms that feed on dead organisms and decomposed matter, they can be classified as biotic organisms.