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|.
Generally, a cactus has 22 chromosomes arranged as 11 pairs. Such a cactus is called 'diploid', from the Greek 'diploos' and 'eidos' for 'double' and 'form', respectively. In the way of comparison, humans tend to have 46 chromosomes arranged as 23 pairs. But some cactus plants have more than two sets of chromosomes. For example, it's possible for a cactus to have 44 or even 66 chromosomes. Such a cactus is called 'polyploid', from the Greek 'polu' and 'ploos' for 'many' and 'fold', respectively.