A researcher is studying three aquatic ecosystems in South Carolina. The fish species found in each ecosystem are shown below. The researcher determines that all three ecosystems contain roughly the same total number of fish. Which ecosystem would be most stable during the outbreak of a disease that affects fish?

Most of earth’s fresh water is found in oceans and seas stored in glaciers and ice caps groundwater stored beneath the surface found in lakes, rivers, streams, and reservoirs

Select all the true statements about the cosmic microwave background radiation

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria