0 the process that results in the continued existence of only the types of animals and plants that are best able to produce young or new plants in the conditions in which they live --
1 the theory that organisms with characteristics that allow them to live successfully in a particular environment will reproduce organisms with the same characteristics --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.