Triglycerides containing unsaturated fatty acids are liquid at room temperature.
Electrochemical processes in a lead-acid battery produce electric current.
Learn the concept of colors, numbers, letters and shapes while playing
Regular dice can be used for solving statistical and probability exercises.
The staggered conformation of ethane is more stable than the eclipsed conformation.
Glands of the endocrine system secrete hormones into the blood.
One of the most common types of flatworms.
The American bison is the largest land animal in North America.
Division of space by three intersecting planes in several different arrangements.
The United States entered World War II after the devastating attack by the Japanese army.
To calculate the volume of a tetrahedron we start by calculating the volume of a prism.
The legendary ruler and military leader, Alexander the Great, established a vast empire.
The mosque, built in a distinctive architectural style, is the largest adobe structure in the world.
A hot air balloon is a balloon aircraft which is lifted by hot air.
Water turbines convert the kinetic energy of water into electric current.
The battle of the Greek-Persian War became famous for the heroic sacrifice of the Spartan soldiers.
Cossacks, members of independent semi-military communities, played an important role in the history of Ukraine.
Every era and every culture has specific residential buildings.
Three saturated fatty acid molecules linked to a glycerol molecule.
Its architectural solutions and ornamentation rank this mosque among the masterpieces of Islamic art.