In the UK, a PhD stands for âDoctor of Philosophyâ, sometimes referred to as a âdoctorateâ. It is the highest level of degree that a student can achieve. At some institutions, including Oxford University, a Doctor of Philosophy is known as a DPhil.
A detritivore (also known as decomposers) is an animal that feeds on dead organisms (living things) and breaks them down into smaller molecules.Detritivores are essential in the ecosystem as they return important materials such as carbon (see carbon cycle) back into the environment. detritivore (also known as decomposers) is an animal that feeds on dead organisms (living things) and breaks them down into smaller molecules.
A herbivore is often defined as any organism that eats only plants. By that definition, many fungi, some bacteria, many animals, about 1% of flowering plants and some protists can be considered herbivores. Many people restrict the term herbivore to animals. Fungi, bacteria and protists that feed on living plants are usually termed plant pathogens. Microbes that feed on dead plants are saprotrophs. Flowering plants that obtain nutrition from other living plants are usually termed parasitic plants.