With the overuse of chemical fertilizers, many lawns now have it to where decomposers can't live. This interferes most directly with the lawn ecosystem to recycle important nutrients. The correct answer is choice number 2.
The MSDS labels quickly inform the users regarding the level of hazards related to some kinds of chemicals. On the basis of the HCS (Hazard Communication Standard), the distributors, chemical manufacturers, and importers must provide the MSDS (Material Safety Data Sheets), for each hazardous chemical.
The MSDS label helps the individual to work with the chemicals in a safe manner and learns easily how to handle them carefully.
A group of organisms that can reproduce amongst themselves is called a species. :)