People breathe out Carbon Dioxide and plants use that Carbon Dioxide to carry out photosynthesis. Plants release oxygen as a by- product that people use for cellular respiration.
Movement toward a stimulus is considered<span> a positive response, while ... Describe the biological </span>levels<span>of </span>organization<span> from the </span>smallest<span> to highest </span>level<span> ... to the entire biosphere, </span>living<span> organisms are part of a highly structured </span>hierarchy<span>.</span>
