Big Bang theory<span> says that our </span>universe began<span> 13.7 billion years </span><span>ago</span>
1.) Coastal environments, deserts, mountain environments, savanna grasslands, and forests.
2.) Each ecosystem has a different climate and people and animals who have adapted to these climates differently than the other environments. Each environment has its own resources there that the other might not have for them to survive.
~Anything you say huh, well I say sleep well tonight!
A steppe is a large expanse of grasslands and few trees. So the choice of grassland with few trees would be your answer.
Good luck :)
