Most aquatic organisms are adapted to a narrow range of salinity. why must aquatic organisms living in coastal areas be adapted to survive in both low and high salinity? during high tide, freshwater mixes easily with ocean water, lowering salinity. during low tide, the ocean water becomes concentrated, increasing salinity. ocean currents bring in deep-ocean water with high salinity concentrations. temperature fluctuations can cause changes in the salinity levels of the water.

Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to canadian breeding grounds in the spring. as global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources how are populations of blue-winged warblers most likely to be affected by the earlier arrival of spring? o a. populations will go extinct since the warblers will stop migrating to breeding grounds. b. populations will be unaffected since most species can quickly adapt to effects of climate change. c. populations will increase since warmer temperatures are generally beneficial to survival, d. populations will decline since individuals will be less likely to successfully reproduce, reset next

How will you manage your time to accomplish the necessary tasks both on the job and at home?

Why do mountaineers become breathless as they reach high altitudes