Answer:
Energy transformation 21
Potential energy 22
Kinetic energy 20
Friction 17
Energy 19
Elastic potential energy 18
Gravitational potential energy 23
Explanation:
not quite sure, but I did my best
The answer is the top one because Jess is asking his mom a question.
Familia lexicală a cuvântului ,,străvechi" este:străvechime,străvechit,înstrăvechit.
1. speed up chemical reactions
2. are not destroyed but re-used
3. are substrate specific
4. genes determine how many enzymes you have
5. decrease the activation energy needed to start a chemical reaction
6. are protein catalysts
