How do Airpot company of South Africa assist passengers eith disability​

What's the waste product of electrons and pyruvate combining in fermentation?  

What problem would a person most likely have if her kidney did not work correctly?

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?