Plants are considered part of the ?
What will be an ideal response?
Biosphere
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The Jovian planets formed beyond the _______________, where water vapor, methane, and ammonia could freeze to form ice particles
Fill in the blank(s) with correct word
The heaviest nuclei of all are formed:
A) in the horizontal branch. B) in dense white dwarfs. C) during nova explosions. D) in the ejection of matter in the planetary nebula. E) in the core collapse that set the stage of type II supernovae.
How can we see through the interstellar medium?
A) by observing in high-energy wavelengths such as X-rays and long wavelengths of light such as radio waves B) by observing only the brightest visible sources C) by using only the biggest telescopes D) by using telescopes above the Earth's atmosphere E) We cannot see through the interstellar medium.
About what percent of Earth's radius do the crust and mantle together constitute?
a. 15% b. 70% c. 45% d. 30%