Number 2 is B the sea level rising
Number 3 is C the lightbulb
Number 4 is D carbon dioxide
Answer:
Add a catalyst
Explanation:
A chemical reaction can be sped up by many factors. ... Add a catalyst (A substance that reduces activation energy, speeding up the reaction) Increase the concentration of reactants. Increase the concentration of catalysts
Answer: thymus
Explanation: T cells adapt in the immune system just like the thymus
Answer:
Self-Discipline
Explanation:
The others do not make sense.
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Answer:
OC
Explanation:
That is just because carbon and oxygen on their own are different as oxygen has more mass or weight than carbon and besides it is 2 oxygens and a carbon that will give you carbon dioxide.