What is wrong with this? Yosemite National Park
Yosemite National Park is located in central California. It is a World Heritage Site and has over 4 million visitors every year. Yosemite has beautiful granite cliffs, waterfalls, sequoia groves, hiking trails, and biological diversity. One of its most popular attractions is Half Dome, which people can hike and climb up.

Photo by David Iliff on Wikimedia Commons. License: CC BY-SA 3.0

professionals can use many types of technology that can them. some examples are, computers (they research and can use for programs for data, they are also used for job applications, school work, and even to make new ideas), speedometers (can get data for unknown data), sometimes something as small as a pen (used for rough drafts, to insert data, and again job applications).

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt