Law of GravitySir Isaac Newton formulated the law of universal gravitation in the 17th century.

Bacterial MovementFlagella are tail-like structures that help bacteria move. Not all bacteria have them, but many use them to swim.

Cause of GoitreGoitre, or swelling of the thyroid gland, is caused by iodine deficiency. Iodine is essential for thyroid hormone production.

Eucalyptus GrowthEucalyptus is one of the fastest-growing trees, commonly used in forestry and paper industries.

Bromine at Room TempBromine is a liquid element at room temperature, used in flame retardants and agriculture.

Vitamin D DeficiencyVitamin D deficiency in children causes rickets, a disease where bones become soft and deformed.

Lordosis Medical TermLordosis refers to inward curvature of the lower spine, commonly called hollow back.