1 Identify the various parts of a typical flower and give their functions. 2  Relate the sequence of events that give rise to microspores and megaspores. 3  Describe the development of the male and female gametophyte.  Describe the double fertilization that occurs uniquely in the flowering-plant life cycle.
Codenamed Operation Overlord, the battle began on June 6, 1944, also known as D-Day, when some 156,000 American, British and Canadian forces landed on five beaches along a 50-mile stretch of the heavily fortified coast of Franceâs Normandy region.
Vitamin D's best-known role is to keep bones healthy by increasing the intestinal absorption of calcium. Without enough vitamin D, the body can only absorb 10% to 15% of dietary calcium, but 30% to 40% absorption is the rule when vitamin reserves are normal.t used to be simple: just get a healthy tan and your body will make all the vitamin D it needs. Desk jobs and sunscreen have changed all that, just as research is underlining the importance of vitamin D and suggesting its possible role in preventing many health problems.