Question

Early human society used metal such as copper gold ,tin and copper . however, iron is much more abundant in the Earth's crust than copper, gold or tin . However,iron objects , such as dagger found in the Egyptian paroh Tuntankhamuns tomb ,we're very rare because they were made from iron that come from meteorites.The most likely reason for being so rarely used in ancient times is the fact that, compared with copper, gold, and tin

1) Iron is harder

2) Iron is less shiny and therefore was less reactive

3) Iron, because of it's density, is only found in the deep Earth's crust.

4) Iron is more reactive, and so is more difficult to obtain from it's ore​

Answer 1

Answer:

the answer I think is option 4)

Answer 2

Answer:

4) Iron is more reactive, and so is more difficult to obtain from it's ore

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