Mammoths, sabertooth tigers, wooly rhinoceroses just a few.
The answer is mitochondrion, it is called as "the power of cell"
Hyppocamus is the eternal body thermostat. If the hyppocamus is removed it would cause a major effect on homeostais.
Star brightness is defined by either <span>D. apparent magnitude - when we measure it from Earth (that is how bright it is from Earth) - this is the closest to "basic observation" and the best answer
or by absolute magnitute - how bright it would be at a certain distance (this allows to compare the brightness).
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The spectrum<span> of </span>electromagnetic radiation<span>, including visible light, which </span>radiates<span> from</span>stars<span> and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies</span>
