The fossil record provides evidence of Earth’s changes over time. It's a record keeper of the Earth'd changes over time.
Although amphibious frogs live on land and in water, they must lay their eggs in water or the eggs will dry up, effectively killing the offspring inside. Frog eggs are covered with a glycoprotein, which helps keep the eggs moist. This glycoprotein has to keep in contact with a source of moisture, such as water.
C. Individuals moving into a population, gene flow can also be referred to as gene migration due to this
