What does the term "invisible web" refer to?
a. the "invisible web" is a subscription service available only to libraries and schools.
b. the "invisible web" refers to a large portion of the web that regular search engines cannot find.
c. the "invisible web" is made of libraries that have scanned their books and put them online.
d. the "invisible web" is a database that can be accessed only through the library of congress.?

This isn’t really school related, but like where the heck can you find manga, to read to where you don’t have to pay money, for points? my friend wants me to read bj alex, and i can’t find it anywhere for free.

Working on this program in python 3.7: a year in the modern gregorian calendar consists of 365 days. in reality, the earth takes longer to rotate around the sun. to account for the difference in time, every 4 years, a leap year takes place. a leap year is when a year has 366 days: an extra day, february 29th. the requirements for a given year to be a leap year are: 1) the year must be divisible by 42) if the year is a century year (1700, 1800, the year must be evenly divisible by 400some example leap years are 1600, 1712, and 2016.write a program that takes in a year and determines whether that year is a leap year.ex: if the input is 1712, the output is: 1712 is a leap year. ex: if the input is 1913, the output is: 1913 is not a leap year. your program must define and call the function isleapyear(useryear). the function should return true if the input year is a leap year and false otherwise.

What side length would you specify if you were required to create a regular hexagonal plate that was composed of 33 cm(squared) of sheet metal? dimension the side length to 0.1 cm