Ahard-shelled nut occurs in all habitats of a certain species of bird, but only some populations of that bird drop the nut on rocks to crack the hard shell. what is the most likely explanation for this difference in behavior?

North carolina ranks second in christmas tree production has nothing to do with biotechnology

U. life is what you go through to become a better person. it makes you stronger, wiser, and more creative. it can be hard but its ok. because i believe everyone was put here for a reason. whether or not you know that reason you should always look towards the future and trust in god for a better tomorrow.be safe and blessed