DRY LAND PLANTS (XEROPHYTES) are able to survive in unfavourable habitats.All are found in places where little water is available ; some live in high temperatures that cause excessive loss of water from the leaves Xerophytes show a number of adaptations to dry condition;these include reduced leaf area , rolled leaves, sunken stomata,hairs, spines,and thick cuticles. One group , succulent plants, store water in specially enlarge spongy tissues found in leaves ,roots,or stems.Leaf succulents have enlarged ,fleshy, water storing leaves..Root succulents have a large , underground water storage organ with short -lived stems and leaves above the ground .Stem succulents are represented by cacti(family cactaceae).Cacti stems are fleshy, green,and photosynthetic ;they are typically ribbed or covered by tubercles in rows , with leaves being reduced to spin or entirely absent.
INDUSTRIAL REVOLUTION Starts in Europe particularly in England in eighteen century.It changed the whole of Europe and England 's economy.During this period New machines are invented in England to speed up the spinning of wool and cotton .At first they were powered by water wheels but later steam engines are developed.Iron become cheaper and stronger as Iron making techniques improved.Canals are dug to carry coal from the mines and to transport finished goods.After ...
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