How can motor vehicles reduce air pollution? Follow these tips to reduce the time you spend driving: Walk or bike when you can. Use the bike-share programs if your city or town has them. Take public transit when possible. Carpool with friends instead of driving alone. Use ride-sharing services. How can we reduce the air […]
What is an Egyptian greeting?
What is an Egyptian greeting? A common phrase that accompanies a greeting is ‘salaam aleikum’ (‘may peace be with you’), which should be replied to with ‘waaleikum us salam’ (‘may peace be with you also’). However, the exact phrase varies by town/city and dialect. What does Hi mean in Egypt? Welcome; hello: أهلا وسهلا (ahlan […]
What is an urban ecosystem?
What is an urban ecosystem? Urban ecosystem, any ecological system located within a city or other densely settled area or, in a broader sense, the greater ecological system that makes up an entire metropolitan area. What is an example of a urban ecosystem? Examples include forests, lakes, soils, and coral reefs. A city is an […]
What did Egyptians use the sickle for?
What did Egyptians use the sickle for? They also formed the foundation of eternal sustenance, as funerary offerings. Ancient Egyptians used sickles made from flint and wood to reap grain. Pieces of flint such as this one were shaped to fit into a wooden haft along with a number of other such inserts, and secured […]
What effect would the lack of oxygen have on living organisms?
What effect would the lack of oxygen have on living organisms? Zones of low oxygen in the water—often called dead zones—can hurt the growth, reproduction and survival of fish and other animals. They can alter food webs in our estuaries and coastal oceans. What happens to oxygen in a dead zone? Less oxygen dissolved in […]
Is a saguaro cactus an organism?
Is a saguaro cactus an organism? Background. The saguaro cactus, Carnegiea gigantea, is the largest cactus in the U.S., commonly reaching 40 feet in height. It has been written that the saguaro can be ecologically connected to nearly every other organism in its range, including humans. Is a saguaro cactus a producer? Desert Biome Food […]
What converts nitrates to free nitrogen?
What converts nitrates to free nitrogen? Denitrification by bacteria converts nitrates (NO3−) to nitrogen gas (N2). Nitrification by bacteria converts nitrates (NO3−) to nitrites (NO2−). Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds. Which bacteria helps in conversion of nitrogen into nitrate? The bacteria that we are talking about are called nitrosomonas and […]
What are the characteristics of freshwater fish?
What are the characteristics of freshwater fish? They have special gills that help them regulate their temperature in the water, their body is usually covered by scales that regulate low temperatures. In their anatomy you can also see some scales throughout their body that allows them to have better mobility. What are freshwater habitats? Freshwater […]
What is the number of individuals of a single species per unit area?
What is the number of individuals of a single species per unit area? Populations Question Answer The number of individuals of a single species per unit area population density The movement of individuals into an area is called immigration The range or area occupied by a population is its geographic distribution What includes the individuals […]