All systems are dependent of each other. For example, the Digestive system shut down the body wouldn't get the energy required so the whole body would shut down. If the circlatory system shut down, the body wouldn't get oxygenated blood to the body so again, everything would shut down. If the respiratory system shut down, oxygen couldn't be taken into the blood and you guessed it, the body would shut down. If the Immune system shut down, simple illnesses like the cold or fever who be very dangorous to the body's health. Lastly, if the excretory system shut down, there would be no why to get the waste from the body out.
Hope this helped ( Sorry I couldn't answer the last question, I didn't have time )
The rods are photoreceptor cells that respond to the longest wavelengths of light, ranging from approximately 500-700 nm. Rods are responsible for vision at low light levels (scotopic vision).
The cones, on the otehr hand are the other <span>photoreceptors in the human retina that </span>are active at higher light levels (photopic vision).
Water temperature influences the onset of fish spawn, aquatic vegetation growth and the biological demand for oxygen in ponds. Temperature increases it holds less oxygen. Also water stratification.
A because water is collected in clouds from bodies of water than falls back down as rain snow or hail
