Tourism and the environment Essay Example | Topics and Well Written Essays - 2000 words

Tourism and the environment - Essay Example The relationship between environment tourism on climate change means how the environment and tourism are both interrelated and interdependent. The changes that are brought by climate change affect both tourism and environment. Tourism provides a link between economic development and the environment. Tourism being an industry earns or generates income. This income can be converted to protect and conserve scenic and biologically valuable areas. It can further generate visitor payback into the management of these areas thus economic fragile communities.The success of tourism depend on environment. When the environment deteriorates due to climate change tourism also decline. Overtime the relationship between environment and tourism has developed. Tourism industry impacts environment both negatively and positively. The environment is impacted negatively by the release of untreated liquid waste from the activities of hotels and restaurants. Further air and noise emissions produced from tourism industry impact the environment. The noise is generated from the coastal constructions which are used to host tourists. Once these constructions are on dust is emitted which eventually settles on coastal waters affecting the marine environment. However, tourism industry as well contributes to the environment positively. The development of appropriate and new technologies has been a result of tourism-environment interaction. For instance beaches and hotels have to develop new technology of hygiene so as to meet the internationally accepted environmental standards. Further revenues and taxes derived from tourist related activities provide for the preservation and protection of natural resources like forests. Tourism can sometimes provide impetus for the conservation of natural resources. For example the development of Graeme bird sanctuary in Barbados. 6 Nature heritage tourism contributes to the conservation of natural resources and promotes socio-economic advancement of local communities. This may drive a sense of ownership and empowerment among the nationals.7 Therefore tourism and environment play a key role in the development and growth of a nation. In the recent years tourism has become the main industry that earns large income to those nations that maintain this industry. It also contributes to the maintenance of our environment. However, tourism and environment can only contribute to sustainability if all measures are taken to curb climate change which negatively impacts the two. Section 2: Background Information Global climate change is probably the most severe threat to our environment and tourism industry. In particular tourism is the largest

General Biology hw Essay Example | Topics and Well Written Essays - 750 words

General Biology hw - Essay Example These light-harvesting molecules otherwise called antennae molecules absorb light energy and transmit it to the reaction center. Once they absorb light, the molecules are in an excited state which is generally unstable. Therefore the excited molecules (electrons) rapidly decay to the ground state with simultaneous transfer of excitation energy to neighboring molecules. This process is called exciton transfer. This transfer continues to the third and fourth or subsequent neighbor until a special pair of chlorophyll a molecules at the reaction center is excited. Upon being excited the electron is promoted to higher energy orbital and then it passes to an electron acceptor leaving the photochemical center with an electron ‘hole’. This electron is then replaced by another electron from a neighboring electron donor molecule. Experiments set up to investigate photosynthesis in plants in the 1950s by Louis Duysens with bacterium Rhodospirillum rubrum found that there was a temporary decrease in absorption of light at the wavelength of 870 nm. This temporary decrease in light absorption was referred to as ‘bleaching’. Similar studies also demonstrated similar ‘bleaching’ at wavelengths of 680 and 700 nm. Therefore, P680 and P700 stand for bleaching which occur in plant chloroplasts at the wavelength 680 and 700 nm respectively. The P680 and P700 represent the maximum wavelength of maximum bleaching (needed to excite) in photosystem I and photosystem II respectively. Chloroplast is a double membrane organelle present in photosynthetic organism. The organelle contains the photosynthetic pigment, chlorophyll which absorbs light in the visible spectra and converts the light energy into chemical via two distinct phases, the light phase and dark phase with the final step of assimilation of CO2 into the cell as a hexose sugar. Photosynthesis is a process that takes place in the chloroplast of photosynthetic organisms where light is absorbed