Photosynthesis
process in which solar energy converts CO2 and H20 into O2 and glucose, opposite of cellular respiration
cellular respiration
breaking down glucose releases energy for the cell.
cellular specialization
cells became specialized to perform certain functions; as number of cells increases, more variety of cells.
Cambrian explosion
Huge number of species formed; evolution took off during this period.
sexual reproduction
combines DNA from 2 sources. Creates variety amongst offspring, increasing survival.