Answer:
1. Some of the different substances that make up a pizza are dough, tomato sauce, cheese, bacon and pineapple.
2. Hydrogen and oxygen make up water.
3. An iron pot is made of iron (and maybe some rubber or plastic for the handles.)
Explanation:
The prior knowledge questions are just for you to "warm-up" your brain about a more complicated topic, to start thinking about how things are made of different parts.
1. Think about what is in your pizza. It does not have to be too specific like the words in the vocabulary list at the top of your page.
2. Assuming you know water is made of "H2O", you would write hydrogen and oxygen. You can specify how many atoms of hydrogen and oxygen there are. (2 hydrogen and 1 oxygen atom)
3. Think about a pot for cooking. Given it says "iron pot", can just write iron.
If you look further down your page, right under question 3, it tells you the answers to the questions. You can be as specific as you want to be.
