I am the land’s enduring vein, bringing life through the hills and plains. I carry trade and travelers far, until I meet the oceans’ arms.

I wear a coat of green, then gold, then brown, But no matter how I'm dressed, I'm always falling down.

I am a massive wall of snow that breaks loose from a mountain and rushes downhill with terrifying speed and force. I bury everything in my path under tons of ice and powder. Loud noises or warming temperatures can trigger me. What am I?

I am the line where the sky meets the earth or ocean as far as your eyes can see. Sailors watch me for land and the sun rises and sets along my edge. No matter how far you walk toward me, you never get closer. What am I?

I grow in damp forests and shady places, popping up from the ground after rain. I have a cap on top and a stem below, and I come in many colors and shapes. Some of me are safe to eat while others are poisonous. What am I?