What of energy is transferred between trophic levels? As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat. What are trophic levels definition? The trophic level of an organism is the number of steps it is from […]

Are there trees north of the Arctic Circle? The arctic tree line is the northernmost latitude in the Northern Hemisphere where trees can grow; farther north, it is too cold all year round to sustain trees. North of the arctic timberline lies the low-growing tundra, and southwards lies the boreal forest. Why are there no […]

What type of region is the wheat belt? North American Great Plains Is the wheat belt a formal region? The North American Wheat Belt is an example of a formal region, in which wheat is the most commonly grown crop, but other crops are grown there as well. The wheat belt can be distinguished from […]

How did the movement of soldiers during World War 1 contribute to the global influenza? How did the movement of soldiers during World War I contribute to the global influenza (flu) pandemic of 1918 to 1919, which killed millions of people? A. Eating unfamiliar foods in foreign countries made soldiers sick to their stomach. Soldiers […]

What are the environmental impacts of deep sea mining? The scraping of the ocean floor by machines can alter or destroy deep-sea habitats, leading to the loss of species and fragmentation or loss of ecosystem structure and function. Why is deep sea mining bad? Scraping and vacuuming the seafloor can destroy habitats and release plumes […]

Why does the inland west receive little rainfall? Why does the inland West receive little rainfall? Hot, dry air gets trapped between the Pacific ranges and the Rockies. What is the climate in the Great Plains region? The Great Plains have a continental climate. Over much of their expanse, cold winters and warm summers prevail, […]

Where in a spiral galaxy would you be most likely to find an O type star? O-type stars are typically located in regions of active star formation, such as the spiral arms of a spiral galaxy or a pair of galaxies undergoing collision and merger (such as the Antennae Galaxies). Do spiral galaxies have old […]

Does ethnicity mean race? Although the concept of race is often associated with ethnicity, the terms are not synonymous. Race includes phenotypic characteristics such as skin color, whereas ethnicity also encompasses cultural factors such as nationality, tribal affiliation, religion, language and traditions of a particular group (Fig 1). What are the races in the United […]

At which latitudes does air rise? With the converging air masses at the surface, the low surface pressure at 60° latitude causes air to rise and form clouds. Where does air rise from on Earth’s surface? In the tropics, near the equator, warm air rises. When it gets about 10-15 km (6-9 miles) above the […]

What is the biggest city in Burundi? Bujumbura Is Bujumbura the capital of Burundi? Bujumbura, city, western Burundi. Bujumbura is the nation’s capital and largest urban centre. Is Burundi safe to visit? OVERALL RISK : HIGH Burundi isn’t a safe destination for travelers. You should know that many governments advise their citizens not to travel […]