The absorption spectra of the bases in polymers are sensitive to pH and greatly influenced by electronic interactions between bases.

TLS Online TPP Program

#Id: 5740

#Unit 10. Ecological Principles

 Brian Walker (1992) proposed the Redundancy hypothesis Species that play the same roles in a community can compensate for each other if some are lost under particular conditions

TLS Online TPP Program

#Id: 5741

#Unit 10. Ecological Principles

Keystone hypothesis

TLS Online TPP Program

#Id: 5742

#Unit 10. Ecological Principles

Idiosyncratic hypothesis Community services change as the number of species increases or decreases, but that the direction of change is not predictable

TLS Online TPP Program

#Id: 5743

#Unit 10. Ecological Principles

Ecotones - An ecotone is a zone of junction or a transition area between two biomes (diverse ecosystems).

TLS Online TPP Program

#Id: 5744

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 5745

#Unit 10. Ecological Principles

Mangrove forests - between marine and terrestrial  ecosystem

Grassland - between forest and desert 

Estuary - between fresh water and salt water

Riverbank or marshland - between dry and wet