A habitat change is a natural phenomena in an ecosystem where a species move to other place due natural or man-made disturbances occurring in an ecosystem. These disturbances can be because of non-availability of resources, natural calamity like drought, flood, forest fires, mudslide etc., introduction of invasive species or predation. An introduction of invasive species will affect the prey population, the prey population will find the habitat not suitable for survival therefore, they will change the habitat. Wildfires and mudslide are natural calamities which will induce habitat change by the species.
This is True . the reabsorption through the proximal tubule is obligatory 80% whereas water reabsorption through distal tubule is facultative but mostly through collector tubules 15 % ( under the action of aldosteron and antidiuretic hormone).