Land Area: 1  Land: 3,537,436 sq. miles (9,161,923 sq km) 2  Water: 181,274 sq. miles (469,497 sq km) 3  Total: 3,718,710 sq. miles (9,631,420 sq km)  Land Area: (individual 1  states) Land Area: (all countries)  Horizontal Width: 2,680 1  miles. Vertical Length: 1,582  miles.
Quick Answer. The smooth endoplasmic reticulum is the organelle responsible for the production of lipids in the cell. This particular reticulum also synthesizes carbohydrates and steroid hormones. The endoplasmic reticulum is made up of membranous sacs and tubules.
Phytoplankton, also called algae, are producers that photosynthesize, meaning they convert energy from the sun, carbon dioxide, and other nutrients in the water into food for themselves. They contribute up to 50% of the world's oxygen to the atmosphere.