Boxes on trees in swamps give wood ducks a place to build their nests Platforms built on top of telephone poles provide a place for eagles to make their nests In backyards and parks, people may set up houses for bats, birds, or toads How do these artificial homes affect resources in the animal's environments? How
does this in turn affect population size?

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explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)