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Answer The economic provision of forests is the production of economic goods, such as timber, fruits, and other products that provide direct benefit to people. Timber Forests are the world’s largest source of timber, which is used in construction, furniture,

Answer: B. Climate Climate is the general pattern of atmospheric conditions of a given area over periods ranging from at least three decades to thousands of years. Meteorology is the study of the atmosphere and weather, where weather refers to

Answer The correct answer is A. II and III. Species play a vital role in Earth’s natural capital and contribute to economic services which humans depend on. Species also provide ecosystem services that help humans to live. Supporting Subsections Species

Answer: C. Sea Breeze Summary: Sea Breeze is a phenomenon caused by the difference in temperatures between land and ocean, where the warm air from the land rises and the cool air from the ocean blows to the land. Subsection

Answer: D. Tundra The tundra is the coldest and most fragile biome in the world. It is characterized by extremely cold temperatures, low precipitation, and strong winds. The tundra is found in the far northern parts of the world, such

Answer The area of the Earth with the lowest biodiversity is the Arctic Circle. This is due to the extreme temperatures, lack of sunlight, and the lack of water in the arctic region. These conditions make it difficult for many

Answer: Warm, less salty, shallow water current moves from East to West The Earth’s warm, less salty, shallow water currents are mainly found moving from East to West. These currents are known as the Equatorial Counter Current, and they are

Answer: C. Permafrost Tundra is typically characterized by permanently frozen soil layer called permafrost. Permafrost is a layer of soil or rock that remains permanently frozen year-round, even during the warmest seasons. It is found in regions of the Arctic

Answer: D. Leeward Leeward sides of mountains are favored by organisms due to the moisture they receive. This is due to the air that is pushed up the mountain, which causes condensation and precipitation as it ascends. This results in

Favorable Parts of a Mountain for Organisms Organisms require certain conditions to survive, such as access to moisture, light, and nutrients. Therefore, certain parts of a mountain can be more favorable for certain organisms to live. The most favorable parts

Answer: D. Tropical Zone Tropical zones receive the greatest amount of solar radiation per unit area. This is due to their proximity to the equator, which leads to more direct contact with sunlight. This increased direct contact results in increased

Answer: D. Human Population Growth Human population growth is considered to be the greatest threat to species loss. This is due to a variety of factors, including increased demand for resources, habitat destruction, and climate change. As the human population

Answer: Walking Through the Earth From the Equator to the North The correct answer is C: Tropical Rainforest, Temperate Deciduous Forest, Taiga, Tundra. Walking from the equator to the north, the climate and vegetation changes from tropical to temperate and

Answer The correct answer is D. Passenger Pigeon. The Passenger Pigeon was a species of pigeon that once inhabited North America, but has gone extinct due to overhunting and destruction of its habitat. Extinction of the Passenger Pigeon The Passenger

Answer: The El Niño Phenomenon The El Niño phenomenon is a natural climate pattern where the surface temperature of the equatorial Pacific Ocean rises to above-average levels and creates a cascade of global environmental impacts. It is caused by a

Answer DDT is a fat-soluble chemical that can accumulate in the fatty tissues of animals. In a food chain or food web, the accumulated DDT is biologically magnified in the bodies of animals at each higher trophic level. The fourth

What is the Greenhouse Effect? The Greenhouse Effect is a natural process that occurs when certain gases in the Earth’s atmosphere trap heat. These gases, such as carbon dioxide, methane, and water vapor, absorb and re-emit the sun’s energy back

What is the Greenhouse Effect? The greenhouse effect is the process by which certain gases in the Earth’s atmosphere, such as water vapor, carbon dioxide, and methane, trap heat and cause the planet’s surface temperature to rise. This phenomenon is

Answer: Option D – Use only wood products from old-growth forests Old-growth forests are forests that have existed for centuries and are home to many species of plants and animals. By using only wood products from old-growth forests, we can

Answer: A. Weather Weather is a set of physical conditions of the lower atmosphere in a given area over a period of hours or days. It includes the temperature, air pressure, humidity, precipitation, visibility, wind speed and direction, and other

Answer The two prevailing monsoon winds, also known as Amihan and Habagat, in the Philippines are the Northeast and Southeast monsoons (Option B). What is the Amihan and Habagat The Amihan and Habagat are two monsoon winds that prevail in

Answer: Air Circulation of the Earth is Affected by Uneven Heating of the Earth’s Surface, Properties of Water and Air, and Rotation of the Earth The air circulation of the Earth is affected by three main factors: uneven heating of

Answer: Restoration Restoration is the process of repairing damage caused by humans to various ecosystems, such as forests, wetlands, and coral reefs. It is a way of restoring habitats to their original state and making them healthy again. Restoration involves

Answer: DDT is Dangerous Because of Biological Magnification DDT (dichloro-diphenyl-trichloroethane) is a chemical that was widely used to combat insects in the mid-1900s but has since been banned due to its adverse effects on the environment and the organisms that

Answer: A. Introduction of Invasive Species The number one cause of premature extinction is introduction of invasive species. Invasive species are non-native organisms that can cause damage to a local ecosystem. These species can be introduced to an area through

Answer: What Does “O” Mean in HIPPCO? The acronym HIPPCO is used by biodiversity researchers to summarize the most important direct causes of extinction and threats to ecosystem services. HIPPCO stands for Habitat destruction, Invasive species, Pollution, Population growth, Climate

Answer: D. Deforestation Deforestation is the process of clearing away large expanses of forest for agriculture, settlements, or other uses. It is the permanent or temporary removal of the trees and other vegetation. Deforestation can have a negative impact on

Answer: Characteristics That Make Species More Prone to Extinction Certain characteristics make species more prone to extinction. These include having commercially valuable body parts, having a specialized niche, requiring large territories, and feeding at high trophic levels. The characteristic that

Answer: Temperature Differences between Equator and Polar Regions The average temperature of an area decreases as we move from the equator to the polar regions. This is due to the effects of the Earth’s tilt and the differences in the

Answer: What happens to the areas average temperature as we move from equator to Polar Regions? The average temperature of an area decreases as we move from the equator to the polar regions. This phenomenon is known as the gradient

Answer: Protecting Aquatic Biodiversity Aquatic biodiversity can be protected by a variety of different methods. The most effective methods include establishing protected marine areas, managing coastal development, engaging to overfishing and reducing water pollution. These methods are the most effective

Answer: Restoration of Tropical Forest Ecosystems Restoration of tropical forest ecosystems is an important part of sustainable forestry. This involves both preventive and restorative approaches, aimed at preserving or restoring the natural balance of the forest and its inhabitants. Restoration

What is an Endangered Species? An endangered species is a species which has few individual survivors, and may become extinct in the near future. It is a classification given to species that are at risk of extinction due to a

Answer: Pesticides and Species Biodiversity Pesticides are a major contributor to the declining species biodiversity of many species, particularly honeybees. Pesticides negatively affect the environment by killing off beneficial insect species, leading to the loss of biodiversity. This has a

Answer: Biome A biome is an ecological area characterized by a specific type of climate and vegetation. Every biome consists of distinctive communities of plants and animals adapted to the climate, soil, and elevation of the area. Examples of biomes

IV. implementing sustainable development practices Summary Species extinction can be reduced and ecosystems can be sustained by establishing and enforcing environmental laws, creating and protecting wildlife sanctuaries, establishing zoos, aquariums, seed banks and botanical gardens for protection of species, and

Answer: Extinction Extinction is a natural occurrence where species become extinct due to various environmental factors. It is important to note that extinction is a natural process and is not necessarily caused by human activities. The current extinction rate is

Answer: What is Extinction? Extinction is the loss of a species caused by environmental changes, human activities, or a combination of both. When a species goes extinct, it is gone forever, and the process is irreversible. Extinction is a natural

Answer: Controlling Invasive Species Invasive species can have a negative impact on local ecosystems and can rapidly take over native habitats. To best control invasive species, it is important to take preventative measures to stop the spread of the species.

Answer: A. Scarce Water Supply A desert is a type of biome that is characterized by its arid climate and scarce water supply. It is a harsh environment that is unsuitable for most plant and animal life. Most deserts have