Explain what an alloy is and why alloys are useful.

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

Why are pipes bursting in the in extremely cold weather?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.