Seeds wait to germinate until three needs are met: water, correct temperature (warmth), and a good location (such as in soil). ... Plants need water, warmth, nutrients from the soil, and light to continue to grow.When a dry seed comes into contact with moist soil or growing media, the seed begins to take up water through the seed coat. As it takes up more water, the seed expands and the seed coat cracks open. The embryo inside the seed is made up of a small shoot and a small root. The root is the first to emerge from the seed.
Speciation, the evolutionary process by which new species are formed, is clearly responsible for the ultimate generation of species diversity over geologic time.
