Cairo has:.a. never been able to control the annual floods inflicted upon it by the Nile River b. limited the Westernizing influences of chains such as Pizza Hut and McDonalds c. a population that is majority Christian d. expanded to engulf the famous pyramid complex on the Giza plateau

Cairo has d. expanded to engulf the famous pyramid complex on the Giza plateau

81 is a composite number.

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.