Why is it diffucult for people to preserve nature?

It's difficult for people to preserve nature because the biodiversity of the planet, including the human race, is dependent upon properly functioning natural processes. W/out a healthy natural environment, most of the things here on Earth, wouldn't cease to exist.

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.