Which of the following best distinguishes why farmers are looking for fertilizer alternatives? 1.Farmers are beginning to understand that phosphorus resources are quickly being depleted.
2.Farmers are realizing that fertilizer is harmful to the environment.
3.Farmers are looking for cheaper ways to make their crops grow quickly.
4.Farmers are trying to comply with regulations that prohibit fertilizer use.

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?