New geographies . FiQ. - A out in the earth, showing the soil resting onthe soUd rock. 14 HOME GEOGRAPHY Having learned how the soil came tobe what it is, let us see how plants makeuse of it. An acorn that has been planted in thesoil sprouts and sends up a tiny Fig. 15. — A photograph of four weeds, showing the greatnumber of long, hairlike roots. This grows taller and taller, and sends out one branch after another until the little tree becomes a mighty oak. What a lot has been used to make such here has it all come from ? it has been taken out of the leaves, but most of it has fro
New geographies . FiQ. - A out in the earth, showing the soil resting onthe soUd rock. 14 HOME GEOGRAPHY Having learned how the soil came tobe what it is, let us see how plants makeuse of it. An acorn that has been planted in thesoil sprouts and sends up a tiny Fig. 15. — A photograph of four weeds, showing the greatnumber of long, hairlike roots. This grows taller and taller, and sends out one branch after another until the little tree becomes a mighty oak. What a lot has been used to make such here has it all come from ? it has been taken out of the leaves, but most of it has from the soil by the roots. The use thatplants makeof the soil of materiala tree ! WSome ofair by the been taken While the stem, branches, and leaves have been growing above ground, theroots have been growing underground,where we cannot see them. These rootshave spread out in all directions (Fig. 15)and have extended deep into the soil, in search of things needed by the tree. Dig up a weed, in order to see how its roots have pushed their way in and out through the soil. Boots have no eyes, to be sure; butthey burrow about, and in their own wayfind what they need. It isnot the large or old roots, ., ^j^^^ * °however, that do this. That j^p^gis the work of the youngr
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeography, bookyear19
