17) Asteroids and comets are

47) A habitable world is defined to be one that

34) Isotopes have the same number of

45) Galileo discovered that Venus goes through a cycle of phases like the Moon. This suggested that

35) The apparent size of the moon in the sky is about:

The most severe form of holoprosencephaly is:

21) What is the primary constituent of Venus’ atmosphere?

28) Which of the following is the correct order of decreasing magma viscosity due to decreasing silica content?

30) Two asteroids are found at the same distance from the Sun. However, one asteroid is twice as massive the other. According to Newton’s Universal Law of Gravitation the force of gravity exerted by the Sun on the more massive asteroid is

Harmonic frequency is twice the fundamental frequency