Answer:
physics and math tutor
Save my exams
Explanation:
hii! for PTM(physics and math tutor) you simply type in the search bar for example in. physics Units and measurements past papers.Then the first option would be PTM(physics and math tutor) and you click on it and it would give you on the left side Revision Notes, flashcards and practice questions. This site has helped me so much and I hope this helps you too (by the way PTM has for all 3 sciences and math too) just simply type the lesson name along with past paper and click on the first link and you'll get yourself your answers!!!! hopefully this helps!:))
Answer: D
Explanation: Energy is neither created nor destroyed so the amount of reactants and products must be equal
When the contracting gas and dust from nebula become so dense and hot that nuclear fusion starts
