Pros and Cons of Hydro electric & Wind energy

SOURCE ADVANTAGES DISADVANTAGES   HYDROELECTRICITY Produce inexpensive electricity Disrupt natural river flow Reservoirs used for flood control, irrigation, drinking water, and recreation Slow down river flow that can kill fish and other animals that depend on a steady flow Renewable energy source Alter water quality Increases reliability of energy sources Significant obstacle to fish and…

Biofuels effects: Social, Economic, Political & Environmental

Political Subsidies and mandatory blending have created an artificially rapid growth in biofuel production, worsening some negative impacts. Existing policies have had a limited effect in achieving energy security and climate change mitigation and therefore need to be reviewed. Government incentives and support for biofuels have been largely guided by national or regional interests rather than a more global perspective. There is…

Why Do Ice Ages Occur: Theories

Plants Theory (recent): Given by University research team Global cooling was caused by reduction of carbon in the atmosphere due to the first appearance of plants (photosynthesis) Less greenhouse gas (carbon) to prevent escape of infrared radiation which leads to cooler temperatures (less heat trapped) Plants (ex. moss) extract calcium, magnesium, phosphorus and iron which…

IPCC: Intergovernmental Panel on Climate Change

The IPCC is known as the Intergovernmental Panel on Climate Change and was established in 1988 by the UNEP (United Nations Environment Programme) and the WMO (World Meteorological Organization). It is one of the leading panels on the assessment of climate change. They provide scientific assessments about the risk of climate change. ROLES OF IPCC:…

Global Warming: Effect on the Atlantic Conveyor Belt & Consequences

What is Happening? The Greenland ice sheet is melting. The ice sheet melting will result in less saline (less dense) water entering the North Atlantic Ocean and floating on top of it instead of sinking, causing less and less deep water currents to moderate the globe’s climate, especially Northern Europe’s. Deep water currents are mainly…

Purple Loosestrife: Invasion & Summary

The scene is breathtakingly beautiful; a thick brush of purple flowers blankets Canada’s wetlands.  This blanket silences the expected sounds of the wetland environment, birds chirping, ducks splashing, insects buzzing and animals thriving.  This unnatural silence is disturbing, the favourite flowers that used to litter this landscape are no longer visible, the water that used…