Why is there more oxygen and carbon dioxide near the surface of the ocean than near the ocean floor? organisms near the ocean floor cannot process these gases, so there is more gas at the surface. the salinity of ocean water traps these gases and prevents them from escaping into the atmosphere. organisms near the surface do not use up these gases, so there is more gas at the surface. the exchange of these gases between water and the atmosphere occurs more readily at the surface.

Acid rain is the direct result of acid released by burning fossil fuels. select the best answer from the choices provided ot o f true or false

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla

All phases of matter may have a fixed mass