Three signals are required for activation of a naïve T cell

TLS Online TPP Program

#Id: 5990

#Unit 10. Ecological Principles

Elizabeth Borer and colleagues argued that the ecosystem exploitation hypothesis makes specific predictions about plant and herbivore biomass under certain scenarios: In a community with only plants and herbivores, if nutrients increase, as with fertilization, herbivore biomass should increase, while plant productivity remains unchanged.  n a community with plants, herbivores, and predators, plant biomass should increase with added nutrients, while herbivore biomass should remain unchanged.

TLS Online TPP Program

#Id: 8839

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 8840

#Unit 10. Ecological Principles

Ecosystem - A structural and functional unit of ecology where the living organisms interact with each other and the surrounding environment

TLS Online TPP Program

#Id: 8841

#Unit 10. Ecological Principles

Flow of food energy up the trophic levels

TLS Online TPP Program

#Id: 8842

#Unit 10. Ecological Principles

Primary productivity The rate at which solar or chemical energy is captured and converted into chemical bonds by photosynthesis or chemosynthesis.

TLS Online TPP Program

#Id: 8843

#Unit 10. Ecological Principles

Standing crop, The biomass of producers present in a given area of an ecosystem at a particular moment in time.