9: type of experiment where all factors except one are held constant. 10 letters. Third letter is N, seventh letter is L and ninth letter is E.
13: element that is an essential nutrient for plants. Eight letters. First letter is N, seventh letter is E.
Thanks!!
2006-10-23 11:33:35 · 5 answers · asked by Peachie 2 in Education & Reference ➔ Homework Help
9: controlled
13: nitrogen
2006-10-23 11:42:59 · answer #1 · answered by LB 4 · 0⤊ 0⤋
well it sounds like #13 would be nitrogen
2006-10-23 18:44:36 · answer #2 · answered by dede 2 · 0⤊ 0⤋
# 13 is NITROGEN, don't know #9
2006-10-23 18:43:48 · answer #3 · answered by nursesr4evr 7 · 0⤊ 0⤋
answer for 13: NITROGEN
2006-10-23 18:43:05 · answer #4 · answered by Petra_au 7 · 0⤊ 0⤋
9:controlled experiment
thats all i know, hope it helps, any word banks?
2006-10-23 18:42:27 · answer #5 · answered by Anonymous · 0⤊ 0⤋