Answer:
D. Refrigerants
Explanation:
In the United States of America, the agency which was established by US Congress and saddled with the responsibility of overseeing all aspects of pollution, environmental clean up, pesticide use, contamination, and hazardous waste spills is the Environmental Protection Agency (EPA). Also, EPA research solutions, policy development, and enforcement of regulations through the resource Conservation and Recovery Act .
The Clean Air Act Amendments of 1990 prohibit service-related releases of all refrigerants such as R-12 and R-134a. This ban became effective on the 1st of January, 1993.
Refrigerants refers to any chemical substance that undergoes a phase change (liquid and gas) so as to enable the cooling and freezing of materials. They are typically used in air conditioners, refrigerators, water dispensers, etc.
The storage that is used to store data in the computer's memory that can be used by a program later when executing instructions is variables.
<h3>What is variables?</h3>
Variables can be defined as the way or process in which data or information are store in a computer memory.
Data or information that may likely change or be altered are often stores in a computer memory storage called variables and this store data can be retrieve later for use by a program when executing instruction on the computer system.
Inconclusion the storage that is used to store data in the computer's memory that can be used by a program later when executing instructions is variables.
Learn more about variables here:brainly.com/question/23931018
Protocol. Like TCP/IP or HTTP etc
Answer:
D. all of the above
Explanation:
Contemporary Information Systems are interfacing with customers andsuppliers using, electronic commerce, CRM, and SCM.
