Correct Answer : Twinkling of stars
Correct Answer : Mercury, Venus, Earth, Mars
Correct Answer : Triassic period, Jurassic period and cretaceous period
The Mesozoic Era is the age of the dinosaurs and lasted almost 180 million years from approximately 250 to 65 million years ago. This era includes 3 well known periods called the Triassic, Jurassic, and Cretaceous periods. A mass-extinction marked the beginning and end of the Mesozoic Era.
Correct Answer : Jupiter
Jupiter 63 Saturn 60 Uranus 27 Neptune 13 Pluto 3 Mars 2 Earth 1 Venus 0 Mercury 0
Correct Answer : the period in which the moon completes an orbit around the earth and returns to the same positions in the sky
Correct Answer : biosphere
Correct Answer : All of the above
Correct Answer : Jupiter, Saturn, Uranus, Neptune and Pluto
Correct Answer : the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun
Correct Answer : 150,000,000 km
One astronomical unit is the approximate mean distance between the Earth and sun. It's about 93 million miles (150 million km), or 8 light-minutes.
