Weegy: Biomes combine to form the biosphere, a life-supporting zone that stretches from the upper atmosphere to deep within the earth's crust. [ Effects on the biosphere from human activities have dramatically increased since the Industrial Revolution.
Read more: The Effects of Human Activities on Ecosystems & the Biosphere | eHow.com
] User: Which planet is smaller than Earth’s core? User: Which planet is smaller than Earth’s core? ... (More)