Answer:
In your fire you hear me scream, creaking and whining, yet I am dead before you lay me in your hearth.
What word is a plural, but when you add an "S" to the end, it becomes singular?
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
Weight in my belly, Trees on my back, I travel fast in my place, but feet is a feature I lack
You can hold it without using your hands or your arms. What is it?
People take me on walks and I run and have fun. What am I?