We only have one planet to live on, and everyone leaves a footprint!
Earth has been developing for over 5 billion years, and humans have only been here for about 3 million years. Today, about 70% of the Earth is covered with water (3% fresh water), and it can all be classified into curtain biospheres. The biosphere may reach 8 kilometers into the sky, and 8 kilometers below sea level. Within this area are smaller groups of spieces called ecosytems. Ecosystems are composed of both biotic and abiotic life, and communities of populations of each different organism.
Biospheres can all be classified by the main plant life found within them. These biomes are known as tundras, rainforests, marine, desiduous forests, and grasslands. Grasslands are very important to the ecosystem known as Earth. They can be found on almost every contient, in a few different forms. Be it tropical or temperate, they are extremly important to Earth.
Did you know?
Baby Giraffes are called calfs, and they spend 15 months inside their mothers wombs before dropping to the grassland. (BBC 10)
About 50% of calfs die in their first 6 months of life in the hands of preditors. (BBC 10)
The average life-span is 25 years, and 28 in captivity. (BBC 3)