FAQ · Environment & Climate 28

Brazil is a geographically diverse country with a wide range of weather conditions and varied topography. Most of the country is tropical, hosting six major climatic subtypes including desert, equatorial, tropical, semiarid, oceanic, and subtropical. These different conditions produce environments ranging from equatorial rainforests in the north to semiarid deserts in the northeast. You can also find temperate coniferous forests in the south and tropical savannas in central Brazil. Forest cover accounts for around 59% of the total land area in the country.

Barbados is home to four species of nesting turtles, including green turtles, loggerheads, hawksbill turtles, and leatherbacks. The island holds the second-largest hawksbill turtle-breeding population in the Caribbean. Additionally, the green monkey is found on the island. These monkeys were introduced to the West Indies in the late 17th century and are considered very curious and mischievous by locals. Visitors should avoid driving vehicles on beaches to prevent crushing buried turtle nests.

The Andean region is a major biodiversity hotspot containing about 30,000 species of vascular plants. Roughly half of these species are endemic to the region, which surpasses the diversity found in any other hotspot. The landscape varies from rainforests and tropical dry forests to deciduous woodlands and xeric vegetation. You can find important crops like potatoes and tobacco that originated here, as well as the Cinchona pubescens tree. Additionally, high-altitude Polylepis forests exist at altitudes of 4,500 meters across several countries. These specific trees are now considered highly endangered due to modern clearance.

The Belize Barrier Reef is one of the most diverse ecosystems in the world. It is part of the Mesoamerican Barrier Reef System that extends from Mexico to Honduras. This area is home to 70 hard coral species and 36 soft coral species. You can also find 500 species of fish and hundreds of invertebrate species there. Currently, only about 10% of the species in the Belize barrier reef have been discovered.

Rainforest deforestation causes fertile tropical forests to be converted into infertile desert land. This process is often linked to shifting cultivation practices like slash-and-burn. In other areas, arable land is lost each year due to desertification and human-induced erosion. Improper irrigation can also damage soil by concentrating salt in the root zone. These combined factors decrease productivity for crops that are not salt-tolerant.

The Alliance for CO2 Solutions proposes using carbon dioxide as a natural refrigerant in passenger cars to replace unsustainable chemical substances. This CO2 is a recycled industrial waste product that does not deplete the ozone layer and has the lowest global warming potential of all currently used refrigerants. Using CO2-based systems could reduce total car emissions by 10% and spare the planet 1% of total greenhouse gases. These systems are cost-efficient because CO2 is cheap and widely available. Additionally, the technology is ready for mass production and performs well in most driving conditions. For consumers, this solution can lower the total cost of ownership by significantly cutting fuel consumption.

The Alliance for CO2 Solutions proposes using carbon dioxide as a natural refrigerant in passenger car air conditioning systems. This approach is environmentally neutral because the CO2 used is a recycled industrial waste product that does not deplete the ozone layer. Implementing CO2-based air conditioning could reduce total car emissions by 10%, which would spare the planet 1% of total greenhouse gases. These systems are cost-efficient and show superior performance in over 90% of all driving conditions. Additionally, the technology helps consumers by significantly cutting fuel consumption related to the air conditioning device.

Most things in a building that use water fall into the categories of fixtures or appliances. As these points perform their functions, they produce waste or sewage components that require removal by the waste side of the system. It is vital that clean water is not contaminated by this wastewater disposal process. Historically, such contamination has been a major source of human fatalities. To prevent this, systems use methods like air gaps and backflow prevention to manage connections.

Plastic products like mulch and films are used extensively in agriculture to improve crop yields and water efficiency. However, the widespread use of plastic mulch and a lack of systematic management lead to large amounts of residue. These plastics fragment over time and accumulate in the soil as microplastics and macroplastics. Because agricultural plastics are difficult to recycle due to high contamination, they are often burned or abandoned in fields and watercourses. This disposal can cause soil degradation and allow microplastics to leak into the marine environment through run-off.

Pollution in Jamaica stems from sewage systems, garbage, and run-off. These materials typically end up in the ocean following floods or rainfall. Inadequate solid waste disposal mechanisms allow waste to enter the water through rainfall forces. This pollution harms wildlife such as fish, turtles, and birds that feed at the water's surface. Consequently, poor coastal water quality negatively affects tourism, fisheries, and mariculture. It also undermines the biological sustainability of coastal habitats and ocean living resources.

Soil erosion released from upper catchments and deforestation have caused periodic and severe flooding in the region. For example, floods in May 2004 killed over 3,000 people on the southern border of Haiti and the Dominican Republic. This environmental issue is linked to the loss of tree cover, which has decreased from 60% to an estimated 30% over the last 50 years. To address these vulnerabilities, the Haiti Regenerative Initiative is working on ecosystem restoration and sustainable resource management. These efforts aim to reduce poverty and the impact of natural disasters.

Wildfires are fueled by the Zonda, which is a hot dry wind. This wind affects the Cuyo and central pampas regions. The Zonda can blow for hours with gusts reaching up to 120 km/h. Additionally, climate change in Argentina is fueling wildfires and causing damage. Changes in precipitation patterns and temperatures are also part of the shifting climate.

Excessive rain during short periods of time can cause flash floods. Overly wet weather can also cause harmful fungus growth in crops. In areas with wet and dry seasons, soil nutrients diminish and erosion increases during the wet season. These conditions can lead to food shortages as crops have yet to mature. Consequently, populations in developing countries may experience seasonal weight fluctuations before the first harvest occurs late in the wet season.

There has been an increase in the prevalence of droughts since the 1970s, especially in the tropics and subtropics. Drought can kill crops and increase erosion, which has a dramatic effect on agriculture. While regular rain patterns are vital to healthy plants, too much or too little rainfall can be harmful or even devastating to crops. All plants need at least some water to survive, but different species require varying amounts of rainfall. For example, certain cacti require small amounts of water, while crops like rice require much more.

In areas that are not served by road or rail, primary transportation in winter is by snowmachine. Another Alaskan transportation method is the dogsled. In modern times, dog mushing is more of a sport than a true means of transportation. Races are held around the state, including the Iditarod Trail Sled Dog Race. Mushers from all over the world come to Anchorage each March to compete. The Serum Run is another sled dog race that follows the route of the famous 1925 relay.

During the Wisconsin glaciation, ocean water was stored in glacier ice, which caused global sea levels to lower. A drop in sea level of about 60 to 120 metres occurred starting around 30,000 years before present. This change created Beringia, a large geographic feature that connected Siberia with Alaska. As sea levels rose after the Last Glacial Maximum, the Beringian land bridge was eventually submerged. Estimates suggest this final submergence happened around 11,000 years before present.

Mexico is one of the 17 megadiverse countries and ranks fourth in the world in biodiversity. It is home to over 200,000 species, which accounts for 10–12% of the world's biodiversity. The country ranks first in reptiles and second in mammals. Additionally, Mexico is considered the second country in the world regarding ecosystems. This high level of biodiversity makes it a frequent site for bioprospecting by international research bodies.

Invasive earthworms from the suborder Lumbricina are expanding their range across North America. These organisms alter nutrient cycles and soil profiles in temperate forests by breaking up decaying organic matter. This process thins out the soil rapidly, which can harm native plants adapted to thick layers of organic matter. Such changes in plant diversity can lead to a loss of biodiversity and forest decline. These worms are considered one of the most invasive animals in the Midwestern United States.

Inuit tribes in and around Canada have adapted their hunting methods as contemporary weapon technology entered the global market. While they traditionally used tools like winter and summer harpoons, the use of the rifle has become more common. Rifles have decreased the energy needed to hunt prey from further distances compared to traditional methods. Using a rifle with a larger caliber makes it easier to obtain bigger prey and increase the general diet. Before rifles, hunting and stalking animals like caribou required much more energy. These technological shifts have helped provide more meat and materials for the community.

Early California Native Americans used various sustainable methods to catch fish and shellfish. The Yurok people constructed temporary communal fish dams using ten panels to ensure future salmon runs. They utilized nets made from iris leaf fibers and log frame weirs to ensnare migrating fish. Other tribes like the Chumash and Gabrielino used fishing lines made of plant fibers or human hair. For shellfish, the Chumash used pry bars, while others used plucking to target larger individuals. These traditional techniques helped manage the populations of fish and shellfish in their environments.

Guyana is located on the Guiana Shield, which is an extremely biodiverse region. Over 70% of the natural habitat in this region remains pristine, unlike other areas of South America. The country is covered by forests and contains more than 8,000 species of plants, with 4,000 found only in Guyana. This diverse plant life supports many animals, including the giant anteater and the world's largest scaled freshwater fish, the arapaima. Many of these forests remain intact due to the very low human population density in the area.

The Interamerican Association for Environmental Defense, also known as AIDA, is a non-profit international environmental law organization. Founded in 1996, it works with partners in many countries including Canada, Mexico, and several South American nations. The organization primarily focuses on improving and protecting human health and the environment. Their notable work includes fighting heavy metal poisoning in Peru and protecting leatherback turtles in Costa Rica. AIDA operates based on principles such as encouraging transnational collaboration and protecting human rights.

The Coral Sea is one of the many seas located along the irregular western margins of the Pacific Ocean. The Pacific Ocean is divided into different regions based on its position relative to the 180th meridian. The East Pacific is located near the Americas and is situated in the Western Hemisphere. In contrast, the West Pacific is located near Asia and is in the Eastern Hemisphere. Therefore, the Coral Sea is not located near the Americas.

The Great Lakes were created through a specific geologic process. These lakes, along with many other northern freshwater rivers and lakes, were carved by receding glaciers. This process occurred approximately 10,000 years ago. This historical event helped shape the northern landscape of the continent. It remains a significant part of the region's geologic history.

Wetlands can be a natural source of sulfuric acid, which contributes to the acidity of rain. This occurs through the activity of sulfate-reducing bacteria found within these environments. Sulfuric acid is one of the two strong acids that primarily cause rain to become acidic. The other major component is nitric acid, which comes from sources like lightning and soil bacteria. Together, these acids influence the varying pH levels of precipitation across the continent.

Desertification occurs when arable land is lost due to human-induced erosion and various environmental factors. In the United States, historical droughts like the Dust Bowl turned productive farmland into desert. Improper irrigation can also cause salt to concentrate in the root zone, which decreases crop productivity. Additionally, deforestation in tropical forests can convert fertile land into infertile desert. Toxic heavy metals can also contaminate arable land according to research.

Mass immunization efforts produce significant medical waste that impacts the environment. During the COVID-19 pandemic, vaccination campaigns generated non-biodegradable plastic packaging and PPE waste. Large amounts of dry ice for cold storage and bio-waste hazardous to aqueous environments were also produced. While components like syringes are largely recyclable, they were often discarded because manufacturing was more economical than recycling. These processes also contribute to increased CO2 emissions through the deep-freezing of vaccines.

Traditional street food snacks in Nicaragua include items like quesillo and tajadas. Another common snack is maduros, which are sautéed ripe plantains. People also enjoy drinking fresco, which refers to fresh juices such as hibiscus and tamarind. These juices are commonly served in a plastic bag with a straw. This practice is part of the local street food experience.