If you appraise something or someone, you consider them carefully and form an opinion about them. [formal] This prompted many employers to appraise their selection and recruitment policies. [VERB noun] Gloria slid an appraising eye over the rest of the rack before reaching for the dress.
(a) Natural ecosystem boundaries occur between a tropical evergreen and riparian forest, and between the riparian forest and the river that it borders. (b) Natural boundaries occur across the gradient from marine to intertidal to foreshore environments near the shore in temperate coastal regions.
Actually, a natural ecosystem is usually responsible for the water you drink or food you eat. Ecosystems provide âecosystem servicesâ that are the main cause of agricultural growth and many other processes that benefit humans.ach ecosystem provides unique services to the environments in their area. Without a properly functioning ecosystem, some environmental processes necessary for the continuation of plant and animal life in each ecosystem would be impossible.