The diagram above illustrates the change in air pressure taking place inside the lungs during complete cycle of breathing. Atmospheric pressure is 101KPa. At which point on the diagram are the ribs beginning to be lowered?

Ausable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state. oceans rivers glaciers freshwater lakes groundwater

What is the most appropriate method of gaining weight (muscle mass)

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?