Forests are home to more than two-thirds of all known land species. Every continent except Antarctica has forests, from the evergreen-filled boreal forests of the north to mangrove forests in tropical wetlands. Forests A forest is a large area covered with trees grouped so their foliage shades the ground. There are many different resources we need to conserve in order to live sustainably. When we use the environment in ways that ensure we have resources for the future, it is called sustainable development. Development and conservation can coexist in harmony. The benefits of development need to be weighed against the harm to animals that may be forced to find new habitats, the depletion of resources we may want in the future (such as water or timber), or damage to resources we use today. All these needs are valid, but sometimes the plants and animals that live in the area are forgotten. A business may want to build a factory or shopping mall on the land. A timber company may want to harvest the area’s trees for construction materials. For some people, a wooded area may be a good place to put a farm. The need to conserve resources often conflicts with other needs. The continuation of life as we know it depends on the careful use of natural resources. Billions of people use up resources quickly as they eat food, build houses, produce goods, and burn fuel for transportation and electricity. The population of human beings has grown enormously in the past two centuries. Through conservation, people can reduce waste and manage natural resources wisely. If used wisely and efficiently, however, renewable resources will last much longer. If resources are carelessly managed, many will be used up. Fertile soil is exhausted and lost to erosion because of poor farming practices. Forests are cleared, exposing land to wind and water damage. Once they are used up, they are gone f orever. Other resources, such as fossil fuels, cannot be replaced at all. Others, like large trees, take a long time to replace. Some of these resources, like small plants, can be replaced quickly after they are used. All the things we need to survive, such as food, water, air, and shelter, come from natural resources. Conservation is the practice of caring for these resources so all living things can benefit from them now and in the future. To disable FN Lock, press the FN key, and the Caps Lock key at the same time again.Earth’s natural resources include air, water, soil, minerals, fuels, plants, and animals. To enable FN Lock on the All in One Media Keyboard, press the FN key, and the Caps Lock key at the same time. Prints the file that is in the active window.Įnabling FN Lock on the All in One Media Keyboard Saves the file that is in the active window. Starts checking the spelling in the active document, if the document's program has a spelling checker. Sends the e-mail message that is in the active window. Replies to the e-mail message that is in the active window.įorwards the e-mail message that is in the active window. Opens a document in programs that support this command.Ĭloses the document or file that is in the active window. Opens the Help system (if any) for the active window.Ĭreates a new document in programs that support this command. You can reassign many of them using Microsoft Mouse and Keyboard Center. The following table specifies the default key assignments for the alternate command keys. When the F Lock light is On, standard functions work (F1, F2, and so on). When the F Lock light is Off, alternate functions work (Help, Undo, and so on). If your keyboard has an F Lock key, press it to toggle between the standard commands and alternate commands. You can press and hold Fn while pressing keyboard letters M, J, K, L, U, I, O, P, /,, and 0 to match the physical layout of a numeric keypad. You can also press and hold Fn while moving your finger up and down on the navigation pad to scroll within a document. On keyboards with an Fn key, hold down Fn and press the key to use the alternate commands. In some programs, the function of a standard command and an alternate command may be the same (for example, F1 typically displays Help for the active window, and on some keyboards, the alternate command for F1 is also Help). Alternate commands are labeled on top of the keys (such as Redo). Standard commands are labeled on the front of the keys (such as F3). This includes the top row of standard function keys (F1–F12). Keys with an Fn key or F Lock provide two sets of commands for many keys.
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