Answer:
Conceptual design is the first stage that involves defining a concept.
Explanation:
In the conceptual design phase it is important to understand the needs, doing research and find out how to meet them defining models and plans. In this stage, you have to define the steps you will need to take to develop the design and identify the challenges you may face in order to be prepare.
Physical weather. It isn't changing the the chemical or biological make up.
The answer to this question is: CE
Calculator will memorize the input that you made from previous calculation until you press the = button.
CE stands for clear data, which means that by pressing this, you will eliminate the calculation from previous effort and start the new calculation on a blank state
