Light Energy Capture Photosynthesis begins when chlorophyll molecules in plant leaves absorb sunlight. These pigments, concentrated in chloroplasts, capture light energy primarily from red and blue wavelengths. The absorbed energy excites electrons in chlorophyll molecules, initiating a series of

Surface Circulation Ocean surface currents form complex patterns driven by wind, Earth's rotation, and temperature differences. Major currents like the Gulf Stream and Kuroshio Current transport warm water from equatorial regions toward the poles. The Coriolis effect deflects these currents,

Early Formation Brain development begins in the third week of pregnancy with the formation of the neural tube. This structure develops into the brain and spinal cord through complex processes of cell division and migration. By birth, the brain contains nearly all its neurons, though most connecti

Nebular Beginning The solar system formed approximately 4.6 billion years ago from a giant molecular cloud of gas and dust. This solar nebula began collapsing under its own gravity, with the central region becoming increasingly dense and hot. As the cloud collapsed, it began spinning faster, flat