brief introduction about myself
supply and demand
In the introduction we will have to give a brief idea about your brand. it includes the brand name, objectives, caption etc. From the introduction it will be clear that what this brand for.
by giving a brief summary of what is happening in the essay
Optoelectronic deals in the study of light sensitive electronic devices.
They are probably referring to your business introduction, which is a brief overview/statements of who you are and what you have to offer to the interviewer. you should think of changing it slightly depending on who has asked the question, as each person needs to hear about different areas of your background/experience.
encyclopedia
Give 5 examples of an ecosystem
If you mean ATM run by the Banks, it is the short form of Automatic Teller Machine.
by just saying what is in your piece give a brief description about what your piece is actually about
It is a polynomial (monomial). It is a polynomial (monomial). It is a polynomial (monomial). It is a polynomial (monomial).
Yes, the topic sentence typically goes in the introduction of a paragraph. It serves as a brief summary of the main point or idea that will be discussed in the paragraph.