如何发挥专业优势:Are some species more important than the others?

Are some species more important than the others? They are some old citied Some are ( ).拍金字塔的照片 there are some bread and water. there are some bread and water. here (is/are)some sweets 求翻译Some independent researchers are .. what are __ the door?-- they are some brooms. some of them are old and some of them are young. There women and men, too. There are some important differences ______ cricket and football.