Schleiden and Schwann determined which of the following statements regarding the cell theory?
A. All cells come from existing cells.
B. All cells are microscopic in size.
C. The cell was discovered by Anton van Leeuwenhoek.
D. The cell is the basic unit of life in all living things.

The process that fuels our sun and allows it to give off that much energy is called nuclear fusion.

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.