... Alternate cause, and the relationship can be reversed. I have ... do not weaken our relationship with Algae and Ferrous ... Because this affects our relationship of Algae/Diatom and Co2 ... again does not weaken our relationship between Ferrous Material and ...
... it were discussing a causal relationship like something else caused both ... does not talk about any relationship that these minerals have with ...
Correct. "Without" and "Unless" = chose either variable, make it the sufficient and negate it, and leave the other variable in it's non-negated form and make it the necessary condition.
... contrapositive with most not being negated, and then when I went ... think) that most cannot be negated. It's good to receive ... point that anything can be negated.
... with the sufficient and necessary relationship between sets and their ... objects. This relationship is airtight, if you ... will, because the relationship holds for the entire set ... because there's no 'flowing relationship' in that expression it' ...
... understand the nature of the relationship between sufficient and necessary condition ... deserved praise. Also the contrapositive relationship needs to understood here as ...