id	keyword
abc-2789	litter
abc-2789	species
abc-2789	soil
abc-2789	retusa
abc-2789	leaf
abc-2789	cover
abc-2789	plant
abc-2789	growth
abc-2789	compounds
abc-2789	hassan
abc-2789	ficus
abc-2789	potential
abc-2789	understory
abc-2789	germination