A few days ago
3 Physical science questions?
1. The element in the earth’s crust with the greatest percentage by weight is
a. aluminum
b. silicon
c. iron
d. oxygen
2. The number of naturally occurring elements is
a. 103
b. 109
c. 88
d. 92
3. the element needed to sustain life is
a. oxygen
b. iron
c. hydrogen
d. water
Top 1 Answers
A few days ago
Favorite Answer
1. B – silicon
2. D – 92
3. C – hydrogen
0
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