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An electric fish generates an electric field using an electric organ, modified from muscles in its tail. The field is called weak if it is only enough to detect prey, and strong if it is powerful enough to stun or kill. The field may be in brief pulses, as in the elephantfishes, or a continuous wave, as in the knifefishes.
Electric trains contributes relatively less to the pollution as pollution happens in the power plants which are lot more efficient than diesel driven engines. [29] Generally electric motors even when accounting for transmission losses are more efficient than internal combustion engines with efficiency further improving through recuperative braking.
Electric cars also have impacts arising from the manufacturing of the vehicle. [43] [44] Electric cars can utilize two types of motors: permanent magnet motors (like the one found in the Mercedes EQA), and induction motors (like the one found on the Tesla Model 3). Induction motors do not use magnets, but permanent magnet motors do.
Electric vehicles have seen a massive increase in sales in recent years with over 90% of all global car markets having EV incentives in place as of 2019. [29] With this increase in sales of EVs and the continued sales of them we can see a significant improvement to environmental impacts from the reduction of fossil fuel dependencies. [ 30 ]
For example, a horse can sniff the air to detect pheromones but a fish which is surrounded by water will need a different method to detect chemicals. Aquatic animals can communicate through various signal modalities including visual, auditory, tactile, chemical and electrical signals. Communication using any of these forms requires specialised ...
Domestic canary, historically used to detect gas in coal mines Sentinel species are organisms , often animals, used to detect risks to humans by providing advance warning of a danger. The terms primarily apply in the context of environmental hazards rather than those from other sources.
Can we imagine ourselves back on that awful day in the summer of 2010, in the hot firefight that went on for nine hours? Men frenzied with exhaustion and reckless exuberance, eyes and throats burning from dust and smoke, in a battle that erupted after Taliban insurgents castrated a young boy in the village, knowing his family would summon nearby Marines for help and the Marines would come ...
Exhaust emissions can be reduced by making use of clean vehicle propulsion. The most popular modes include hybrid and electric vehicles. As of December 2020, China had the world's largest stock of highway legal plug-in electric passenger cars with 4.5 million units, representing 42% of the world's stock of plug-in cars. [19] [20]