Explain how competition can affect an organism's niche.

In interspecies competition, two species use the same limited resource. Competition has a negative effect on both of the species (-/- interaction). Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.

the statement is true

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high