Food chains‚ Food Webs and the Flow of Energy in Ecosystems Introduction An ecosystem can be defined as a more or less self-contained function unit in ecology consisting of all abiotic and biotic interactions in a specific area. Flow of energy within an ecosystem is a one-way process; Photosynthesis utilizes light (solar) energy to yield chemical energy that is passed on to organisms at significantly reduced amounts at each level of nutrition. This ‘inefficiency’ in energy transfer is the principal constrain
Premium
Investigating the Control Dynamics of an Algae-Brine Shrimp Ecosystem 113437768 Introduction The purpose of this lab is to investigate whether an ecosystem consisting of marine algae and brine shrimp are controlled by top-down or bottom-up mechanisms. The terms top-down and bottom-up in the context of ecology describe which trophic levels are enforcing population pressures on the others. Thus‚ the top-down mechanism of control holds that consumers are responsible for determining the abundance of
Premium Water Algae Fish
The Effects of Coal on the Wetlands 1 The Effects of Coal on the Wetlands Summary Coal is one of the most used sources of energy in the world. Big energy corporations like it because it is very cheap and abundant. On top of being cheap and abundant coal is very easy to extract as it does not need much heavy equipment like drills. Although coal may sound good it is not. Coal is a very dirty substance. All the processes that involve coal are bad for the environment. Coal damages all different ecosystems
Premium Coal Water Carbon dioxide
Using Kanamycin Resistance Bacteria to find the Sources of Contamination of Three Chicken Farms Introduction: Kanamycin is a common antibacterial that interferes with bacterial growth‚ by inhibiting protein synthesis‚ and causing the mistranslation of mRNA. Kanamycin is commonly used in chicken feed to keep harmful bacteria from getting into the eggs and producing healthier chickens. Recently reports of severe gastroenteritis have been linked to eating raw or undercooked eggs. This has led to
Premium Immune system Bacteria Microbiology
EFFECTS OF AIR POLLUTION Nowadays‚ we are busy with our lives and do not realise that what we have done to our environment. In fact‚ there are a lot of pollutions which have caused by human’s activities especially the air pollution. Air pollution is a commonly understood environmental issue. According to a study by the World Health Organization‚ there is an average of 2 million people are killed worldwide every year due to air pollution. So‚ it has shown us how seriously the tendency of air pollution
Premium Earth Oxygen Ozone depletion
chemicals and other waste…those chemicals are washed into rivers‚ which feeds waterfalls and then goes into the ocean” (Espinoza‚ 2014). This careless disposal of household toxic wastes is harming the ecosystem and contaminating water quality in a variety of ways. One of
Premium Hazardous waste Battery Waste
tourism industry on local economies worldwide‚ the debate over the positive and negative effects of tourism is little more than a mental exercise. But to develop sustainable tourism policies‚ a thoughtful consideration of these effects is necessary. This essay will argue that there are much negative sides outweighed the positive sides‚ and suggest how to minimize the negative effects of tourism. Economic Effects Tourism’s primary benefit is the profit it brings the local and regional area. But the
Premium Tourism Culture Sustainable tourism
Along with its anxiety-inducing effects‚ climate change also offers an interesting opportunity to consider fascinating‚ interconnected processes on Earth. The smallest to the largest components of the planet – from bacteria to volcanoes – all somehow feel the effects of a changing climate. Here are six of the most unexpected ways climate change impacts Earth Desert bacteria dies Desert soil may appear desolate and void of life‚ but it actually teems with bacteria. Bacterial colonies can grow
Premium Ocean Climate Earth
Modern Agriculture: Its Effects on the Environment Agriculture has been a major component of the United States economy ever since colonial days‚ when 9 out of 10 working persons were employed on a farm. Produclivity of American agriculture has tripled since then‚ and today only 3 percent of our labor force produces enough food and fiber to meet domestic needs as well as supplying about 10 percent of total overseas consumption. This huge increase in efficiency has been the result of many factors
Premium Agriculture
The destructive effects of an earthquake can be classified into primary and secondary effects. Primary effects are the immediate damage caused by the quake‚ such as collapsing buildings‚ roads and bridges‚ which may kill many people. Those lucky enough to survive can suffer badly from shock and panic. Secondary effects are the after-effects of the earthquake‚ such as fires‚ tidal waves‚ landslides and disease. Fire - earthquakes destroy gas pipes and electric cables‚ causing fires to spread
Free Earthquake Tsunami Plate tectonics