Elena has two magnets. she puts one under a piece of paper. she holds the other one above it. the magnets attract each other. this shows that a) magnets can attract through solid materials. b) magnets cannot attract through solid materials. c) magnets must be suspended in air to attract each other. d) magnets attract when they are placed on top of each other.

What does si stand for,when referring to a system of measurement

Both independent and dependent clauses

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to