The chemical elements are arranged in order of increasing atomic number. Answer A.
Answer:
Ten possibilities for staving off catastrophic climate change ... What can one person, or even one nation, do on their own to slow and reverse climate change? ... could reduce greenhouse gas emissions to safer levels—there are ... mode of transport that does not require anything other than human energy.
Explanation:
Color change bubbles and i think dissolving
40.0 is the answer, sorry, I had some lag, I would've answered it like 5 minutes ago
Hope I helped