How much energy does it take to boil 500.g of water at its boiling point?

answer: you could do some invislibe ink.

explanation: i will tell you how to if u answer my question.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;