competitive exclusion principle:In ecology, the competitive exclusion principle, sometimes referred to as Gause's law, is a proposition named for Georgy Gause that two species competing for the same limited resource cannot coexist at constant population values
and another one.
Photoautotrophs are organisms that can make their own energy using light and carbon dioxide via the process of photosynthesis.
Astrocytes are the most numerous cell type within the central nervous system (CNS) and they perform a myriad of tasks ranging from axon guidance and synaptic support, to the control of the blood brain barrier and blood flow.