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about birds birds are vertebrate animals adapted for flight. many can also run, jump, swim, and dive. some, like penguins, have lost the ability to fly but retained their wings. birds are found worldwide and in all habitats. the largest is the nine foot tall ostrich. the smallest is the two inch long bee hummingbird. everything about the anatomy of a bird reflects its ability to fly. the wings, for example, are shaped to create lift. the leading edge is thicker than the back edge, and they are
oor voëls voëls is gewerwelde diere wat aangepas is vir vlug. baie kan ook hardloop, spring, swem en duik. sommige, soos pikkewyne, het die vermoë om te vlieg verloor, maar hul vlerke behou. voëls word wêreldwyd en in alle habitatte aangetref. die grootste is die volstruis van 9 voet lank. die kleinste is die twee duim lange bykolibrie. alles omtrent die anatomie van 'n voël weerspieël sy vliegvermoë. die vlerke is byvoorbeeld gevorm om hysbak te skep. die voorkant is dikker as die agterkant, en dit is
最后更新: 2021-10-11
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