Activity for chase leffersâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
What adaptations would a tree need to survive an area with monthly fires? Imagine a plain made of tall grass that sways in a gentle breeze. Everything is a deep green and there is a riot of life sprouting from the black ground. A few days later, the grasses turn brown and the animals burrow deep underground. Another day later and an inferno sweeps through the area, complet... (more) |
— | over 4 years ago |
| Question | — |
What would happen if the mass of air around earth doubled? So the mass of air around the earth has doubled. How it doubled isn't part of the question, but for the curious let's say a space station floating around earth processed all the nitrogen, oxygen, carbon, etc from some comets and pumped it down to sea-level. The process took a week to complete and the... (more) |
— | over 4 years ago |