A friend notices that a nail that was left outside for a few months seems larger and heavier than it was before. He says it disapproves the law of conservation mass. Explain why he's wrong.

257 grams h2o i think

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.

Aseasonal prevailing wind in the region of south and southeast asia, blowing from the southwest between may and september and bringing rain (the wet monsoon ), or from the northeast between october and april (the dry monsoon ).