B. If 10% or more of a planet's total mass is water, there can be no dry land on that planet.
C. If 10% or more of a planet's total mass is water, there can be little phosphorus on that planet.
I feel the logic used to deduce both B & C is quite similar, then how can we prefer one over the other?
B. There are two reasons why accumulation on NP on land not possible -> Either NP not possible on such planets or there is no land available for accumulation of NP. Therefore, there CAN be no dry land on planets with >10% Water Mass.
C. There are two reasons why planets with no Fresh Water are unlikely to have good amount of P in absorbable form -> Either little P is present in absorbable form OR little P is present to start with. Therefore, there CAN be little P present on planets with >10% Water Mass,
Can someone please point out the flaw in my reasoning? Based on the above logic, I find both B & C fine.
Thanks