What is the term for the process by which water changes from vapor to liquid as it cools?

What is the term for the point in a planet's orbit where it is closest to the Sun?

Which moon of Jupiter is the largest moon in our solar system and even larger than the planet Mercury?

According to the law of conservation of energy, what happens to the total energy in a closed system?

Which moon of Jupiter is the most volcanically active body in our solar system, with plumes of water vapor and icy particles erupting from its surface?

What is the function of the respiratory system?

Which moon of Saturn is known for its unique two-tone appearance, with one hemisphere being reddish and the other being bright white?

What is the term for the process by which rocks are physically broken into smaller pieces without changing their composition?

What is the main function of red blood cells?

What is the purpose of the mucus in the digestive system?