Which of the following choices correctly describes the composition of the cell membrane

contains only lipids
contains lipids and proteins
contains lipids and cytosol
contains only proteins

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?