The genetic code, in effect, is defined by two elements:

(1) the anticodons on tRNAs

(2) the specificity of the enzymes.

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. 

TLS Online TPP Program

#Id: 8844

#Unit 10. Ecological Principles

Net primary productivity is commonly measured by harvesting a defined area of an ecosystem at the end of the growing season and determining the accumulated biomass of producers

TLS Online TPP Program

#Id: 8845

#Unit 10. Ecological Principles

Remote sensing A technique that measures conditions on Earth from a distant location, typically using satellites or airplanes that take photographs of large areas of the globe. 

Satellite images of ecosystems that show a pattern of high absorption of blue and red light and high reflectance of green light indicate ecosystems with high standing crops of producers.