Biology
The _ is the largest species among the Felidae and classified in the genus Panthera. It is most recognisable for its dark vertical stripes on reddish-orange fur with a lighter underside.
What is a tiger?
_ is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
What is Mars?
A _ is a wheeled motor vehicle used for transportation. Most definitions of _ say they run primarily on roads, seat one to eight people, have four tires, and mainly transport people rather than goods. _s came into global use during the 20th century, and developed economies depend on them.
What is a car?
_ is a genus of flowering plants in the coffee family, Rubiaceae, native to the tropical and subtropical regions of Africa, Asia, Madagascar and Pacific Islands. The genus was named by Carl Linnaeus and John Ellis after Dr. Alexander Garden, a Scottish-born American naturalist.
What is a gardenia?
A _ is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. Nuclear fusion reactions in its core support the star against gravity and produce photons and heat, as well as small amounts of heavier elements.
What are stars?
An _ or aeroplane is a powered, fixed-wing aircraft that is propelled forward by thrust from a jet engine, propeller or rocket engine. _s come in a variety of sizes, shapes, and wing configurations.
What is an airplane?
_s are several species of African equids united by their distinctive black-and-white striped coats. Their stripes come in different patterns, unique to each individual.
What is a zebra?
_ is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. Uranus is similar in composition to Neptune, and both have bulk chemical compositions which differ from that of the larger gas giants Jupiter and Saturn.
What is Uranus?
_s are now used for fireworks, weaponry, ejection seats, launch vehicles for artificial satellites, human spaceflight, and space exploration. Chemical rockets are the most common type of high power _, typically creating a high speed exhaust by the combustion of fuel with an oxidizer.
What are rockets?
Acer is a genus of trees and shrubs commonly known as _. The genus is placed in the family Sapindaceae. There are approximately 128 species, most of which are native to Asia, with a number also appearing in Europe, northern Africa, and North America.
What is a maple tree?
A _ is a region of spacetime exhibiting gravitational acceleration so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a _.
What is a black hole?
Not only have _s and boats been used for transportation throughout history, they have been used for a number of other reasons including to transport cargo, fishing, as a type of defense from armed forces, sports, leisure, and relaxation.
What are ships?
_s or _s are any feliform carnivoran mammals of the family Hyaenidae. With only four extant species, it is the fifth-smallest biological family in the Carnivora, and one of the smallest in the class Mammalia.
What is a hyena?
_ is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune. It was the first Kuiper belt object to be discovered and is the largest known plutoid. Pluto was discovered by Clyde Tombaugh in 1930 and was originally considered to be the ninth planet from the Sun.
What is Pluto?
A _ is a form of transport consisting of a series of connected vehicles that generally runs along a railroad track to transport cargo or passengers.
What is a train?