Answer:
Both Change A and B
Explanation:
Given that chemical changes is a form of change of matters that deal with the combination of various substances to form a new substance entirely that has different chemical and physical characteristics from its parents' substances.
Hence, when Animal waste is acted upon by anaerobic bacteria to produce biogas it is considered a chemical change.
Similarly, when biogas burnt as fuel it is also considered as a chemical change.
Therefore, in this case, the correct answer is "Both Change A and B" are chemical changes.
Answer:
4: It is a measure of how far an object moves in a certain time.
Explanation:
Hope this helps
The enzyme is a catalyst, meaning it is speeding up the chemical process.
Osmosis passes from a medium with a high concentration of water molecules to another with a low concentration of water molecules and since the potato has low water concentration so the water transfers to it increasing its mass
Explanation:
because the tilt of the earth on its axis
