I believe a biotic factor because i was taught it was alive it still counts and also houses other organisms
Multicellular is the word you're looking for ;-)
Not rounded:
0.005% of 100 = 0.005
Rounded to maximum 2 decimals:
0.005% of 100 ≈ 0.01
0.004% of 100 = ? ... 0.006% of 100 = ?
1% of 100 = ?
object
it is object in the gaps.
hope this helps:)