analyze

balance

boundary

capacity

catastrophy

characterize

circulation

composition

concept

consequence

converge

cycle

deduce

depletion

describe

determine

discern

discriminate

distinguish

distribution

dynamic

element

emit

empirical

energy

evidence

evolution

feature

front

function

identify

impact

infer

influence

internal

mechanism

mitigation

observation

origin

parameter

pattern

predict

primary

principal

process

relationship

relative

reservior

sequence

shift

significant

structure

system

texture

theory

transfer

trend

variation