essential_elements Micronutrients: cofactors of enzymes/
mineral_deficiency Chlorosis: yellow lack of chlorophyll; (porphyrin ring with magnesium); nitrogen: N-P-K in fertilizer. Iron as cofactor in photosynthesis, ETC.
soil Organic on top of A, Eluviation between A & B. D is bedroc; Hummus: dip/spread chickpeas.
soil_availability Rock sizes: gravel sand silt clay.
nitrogen_fixation First nitrifying, then Nitrogen-fixing & Ammonifying; ammonium=ammonia cation (+H)
nitrogen_nodules (Fabaceae)
bacteroids Nodule from Cortex and pericycle cells.
adapt-Carnivorous IMAX-SecretLife/#16:15 Sundew, Venus flytrap
Flytrap: electrical impulses; Pitcher: Nepenthes, Sarracenia; Sundew Drosera
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SQ:  1=b  2=B  3=C?            10=b
AQ:  1=e  2=C  3=b  4=a  5=D
CQ:  1=a  2=c  3=d  4=d  5=a        21=C? 22=e

0. Alkaline soil (basic) is a proton acceptor.
1. Pericycle: the outermost layer of the vascular cylinder of a root
2. Epi (greek) - upon, phytom - plant
3. Epiphytes: bryophytes,
   orchids: roots are covered by layer of dead tissue (velamen), protects roots when dry, absorb when wet; Mycorrhizas.
   bromeliads: leaves covered with permeable scales (trichomes), absorb water when wet, seal up when dry.
4. staghorn ferns: brown broad basket leaves that curl inwards to collect debris and form a spongy centre which absorbs water and collects minerals from the decaying debris. Roots grow into this centre.