Answer:
PSTN
Explanation:
The full form of PSTN is Public Switched Telephone Network. It is a traditional circuit-switched telephone network which is used by the several regional, local or national telephony operators. They came in used in 1800s. It is a form of communication among the people which works with the help of underground copper wires.
In the context, when I am travelling through the metropolitan as well as the rural areas of the North America, the PSTN provides the internet connectivity in all the places. It helps me to communicate with the other people with the help of a telephone.
Depends on what kind of goal.
If I gave a goal of eating 8 hot dogs then a barrier would be a physical will of your body to not eat more. It would be a limit your body can take so it’s different from a mental or other barrier.
If you wanted to cross an area of land but there is a fence in the way then that’s another type of barrier.
Or there are mental barriers. If you wanted to ask someone out to prom, you may be stopped by a mental barrier of self hatred. Feeling like you’re not good enough.
Hopefully this helps!
Assuming the context, it would be considered a verb.
ie: "She contended to me that I was not acting maturely."
Answer:
Calculus is a branch of mathematics focused on limits, functions, derivatives, integrals, and infinite series. ... Calculus has widespread applications in science, economics, and engineering and can solve many problems for which algebra alone is insufficient.
