Because marine algae indirectly remove atmospheric carbon dioxide, a major ______ in marine algae populations might result in ______ levels of carbon dioxide.

多项选择题Due to the ______ of architect Benjamin Banneker, the remarkable street plan for Washington, D. C., that had nearly been abandoned was ______ and carried out.

多项选择题Grover Pease Osborne s 1893 economics treatise was remarkably ______ since it foresaw that technological advances would increase the availability of natural resources.