To eliminate the possibility of hidden or unknown variables, the scientist must run a experiment. a) control b) preliminary c) test d) variable

Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated. 1. sporophyte dominance, gametophyte independence 2. sporophyte dominance, gametophyte dependence 3. gametophyte dominance, sporophyte dependence a) 1 → 2 → 3 b) 2 → 3 → 1 c) 2 → 1 → 3 d) 3 → 2 → 1 e) 3 → 1 → 2

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

Which law represents a balanced chemical equation?