D. metamorphic rock melts and crystallizes to become igneous rock <span />
Answer: El carbono, que en estado sólido, puede adoptar muchas formas alotrópicas, siendo las más comunes el diamante (red tridimensional) y el grafito (láminas), aunque también puede formar nanoestructuras en forma de balón de fútbol (fullerenos) o tubos diminutos (nanotubos de carbono), entre otras posibilidades.
Explanation:
Answer - Inter-molecular attractions
Explanation-
As we know everything around us is made up of matter that means everything has molecules as their basic structure. The state of anything is decided by the spaces between the molecules.
The state of the objects that have strong inter-molecular attractions a solid and gradually the lesser will be in state of liquid and gas. The attraction between the molecules is overcome only when a certain amount of energy is provided from outside.
Seems to me it's graph A, based on the trends.
Nectar contains a high concentration of sucrose (sugar).
When hummingbirds ingest the nectar, their cells use oxygen to convert it into carbon dioxide and water.
The oxidation of sucrose releases a large amount of energy, which the birds can use for flapping their wings, etc.
