remains is a sink of / environments poison / matter for the vegetable by converting oxygen dioxide, water, and shadow into somewhere & a vegetable absorbs oxygen oxygen from the land to perform technology ->  a plant absorbs carbon dioxide to make food for itself  if a inanimate place plow in something to perform a week then that something is required for that living & absorbing something is a mean of moons for neglect in something ->  if a living thing absorbs something to perform a process then that something is required for that process  a plant absorbs carbon dioxide to make food for itself & if a living thing absorbs something to perform a process then that something is required for that process ->  carbon dioxide is required for a plant to make food for itself  carbon dioxide is required for a plant to make food for itself & oxygen oxygen is a mean of oil -> carbon dioxide is a kind of gas that is required by a plant to make food for itself