B) The positive charge of the protons in the nucleus equals the negative charge in the electron cloud.
(I just took the test and it was right). :)
A journal could be used as a recording device to share and show proof of scientific data.
The roots of the plant do not make the food. Thus, the answer to this question is letter B. The roots hold the plant in place and through them the minerals and water from the soil. The roots is also involved in the vegetative reproduction and competitions with other plants.
Parents receive vouchers amounting to the sum that the state spends on their child's education under the concept of school choice. School choice is present in the United States, where an array of alternative options are provided to parents as substitutes to the public school that are present in their district. Options received under school choice include home schooling, virtual schooling and magnet schooling.