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Rocket propulsion is a method of acceleration or movement that involves the expulsion of high-speed gases through a nozzle. This action-reaction principle, famously described in Newtons Third Law, is the fundamental mechanism by which rockets achieve thrust, allowing them to move forward. Rocket propulsion is commonly used in space exploration for launching spacecrafts and satellites.

A tubal pregnancy, also known as an ectopic pregnancy, is a condition where the fertilized egg implants itself and grows in the fallopian tubes instead of in the uterus. It is a serious condition that requires immediate medical attention as it can cause internal bleeding, infection, and damage to the tube, and it is not viable for the fetus. It generally occurs in the first few weeks of pregnancy.

Araucaria bidwillii, commonly known as the bunya pine or bunya-bunya and sometimes referred to as the false monkey puzzle tree, is a large evergreen coniferous tree in the plant family Araucariaceae. It is found naturally in south-east Queensland Australia and two small disjunct populations in north eastern Queenslands World Heritage listed Wet Tropics. There are many old planted specimens in New South Wales, and around the Perth, Western Australia metropolitan area. They can grow up to 30–45 m (98–148 ft). The tallest presently living is one in Bunya Mountains National Park, Queensland which was reported by Robert Van Pelt in January 2003 to be 169 feet (51.5 m) in height.The bunya pine is the last surviving species of the Section Bunya of the genus Araucaria. This section was diverse and widespread during the Mesozoic with some species having cone morphology similar to A. bidwillii, which appeared during the Jurassic. Fossils of Section Bunya are found in South America and Europe. The scientific name honours the botanist John Carne Bidwill, who came across it in 1842 and sent the first specimens to Sir William Hooker in the following year.

Genus Cochlearia is a group of flowering plants in the family Brassicaceae. The name Cochlearia is derived from Latin cochlearis meaning spoon-like, referring to the shape of its leaves. This genus comprises approximately 30 species, including Cochlearia officinalis or common scurvygrass. These plants are predominantly found in coastal locations and mountainous regions in the Northern Hemisphere. They were historically used to prevent scurvy because of their high vitamin C content.