At 3:05 p.m. on January 13, 2026, the U.S. Census Bureau estimated that the population of the world was 8,161,028,571 people.   What was the estimated population of the world at 2:59 p.m. on January 13, 2026?

Mole Hill in Dayton, Virginia is the remains of an extinct volcano.  Which of the following is an extinct volcano?     

The oldest continually operating show cave in the United States is Grand Caverns in Grottoes, Virginia.  Which of the following is the oldest continually operating show cave in the United States? 

Is the lowest of the 4 Tests dropped?

Identify this interaction between nonpolar R groups (arrow tip) that stabilizes protein structure in an aqueous environment.  

Refer to the structural formula of the disaccharide maltose.   The covalent bond that joins the two glucose subunits is called ___ bond.

When setting up Canvas Notifications, students are required to select ‘Notify immediately for ___ and ___.

Refer to the DNA double helix. The two polynucleotide strands are held together by ___ bonds.

Refer to the structural formula of the amino acid serine.     Which group of atoms is called hydroxyl?

An atom has one valence electron. It will most likely ___.