Answer: it’s number 2 add a catalyst
Hopefully this helped :)
Answer: B). little wind
Explanation: Deserts have few large animals, fertile soil, and little rainfall but they have lots of wind
Hmm.... Oxygen support combustion. Other than that, rusting occur when oxygen is combined with metal. When iron rusts, it combines with oxygen. Hope it helps.
Explanation:
I think 20
0 in the photo should be 1, 1, 1