1 Collegedata.com says, âThe College Board reports that the average cost of room and board in 2014â2015 ranged from $9,804 at four-year public schools to $11,188 at private schools,â but doesnât break down whatâs room and whatâs board.2  A USA Today article quotes the same figures. Collegedata.com says, âThe College Board reports that the average cost of room and board in 2014â2015 ranged from $9,804 at four-year public schools to $11,188 at private schools,â but doesnât break down whatâs room and whatâs board. 2  A USA Today article quotes the same figures.
B. Leaves is a modification into the spine in a cactus plant. they are modified leaves. Being narrow and sharp not only helps defend the plant but also the reduced surface area helps limit water loss. [ [ ] ]. Expert answered| patmarone |Points 5452|.
A cactus (plural, cacti) is a type of succulent plant belonging to the dicotyledonous flowering plant family, Cactaceae. The Cactaceae has around 90 genera and some 1,500 to 1,800 species.Cacti are well-known natives of the Americas, mostly found in desert areas.he leaves have evolved into spines, which in addition to allowing less water to evaporate than regular leaves, defend the cactus against water-seeking animals. Photosynthesis is carried out by enlarged stems, which also store water.