1- what goods do you need to live? 2 - what happens to the price of these needed

1. Air, water, and food
2. Prices increase
3. Aftershave, Lipstick, Chapstick, Soap, Etc.
4. If the things we needed to live were so expensive that nobody could afford them, everyone would be dead. Human life doesn't depend on cars, TVs, phones and all the other luxuries.
5. Land, Labor, Capital, and Entrepreneurship
6. They create jobs, they meet demands of the market (give people what they want/need), entrepreneurship promotes efficiency and conserves resources. Agriculture is a good example of this.

The verb forms in the given sentence above are the words "shed" and "forms". In these verb forms, the subjects that agree to these are comets, and ice, respectively. The verb "shed" modifies "comets" and the verb "forms" modify the word "ice". Hope this answer helps.