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a thin, flexible layer of the plant cell wall inside the middle lamella. It consists mainly of...
non-rechargeable cells, such as the zinc-carbon torch cell.
Primary cells are non-rechargeable cells, such as a zinc-carbon torch cell. Secondary cells are...
(also called herbivore) an animal that feeds directly on plant matter.
Primary economic activities involve the exploitation of raw materials from the natural...
includes salaries; benefits and income from investments that move between countries.
all those industries based on raw materials that come from the Earth.