Phytoplankton are plantlike microorganisms that live on the water's surface in aquatic biomes. as photosynthesis organisms, phytoplanton produce much of earth's oxygen as a byproduct. explain the ecological impact of a decline in phytoplankton by providing examples from the organism through the ecosystem levels of organism.

the peripheral nervous system or pns contains the nerves, which leave the brain and the spinal cord and travel to certain areas of the body. the peripheral nervous system's main job is to send information gathered by the body's sensory receptors to the cns as quickly as possible.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.