HELP ASAP ( 20 points and worth if you answer all questions)

Read and choose the correct option. in colombia, all students are required to wear uniforms in public and private schools. uniforms in colombia consist of two sets; one for everyday use and one for physical education. everyday use uniforms for girls generally include a knee-length skirt, a white t-shirt, and a vest with white mid-calf socks. boys typically wear long dark pants and a long or short-sleeved shirt. the shirt usually has the school's symbol on the left side. the sports uniform consists of sweatpants, a collared t-shirt, and white sports shoes. the designs and the colors of the uniforms depend on the head of the school, and sometimes, the head of the school and the parents' preference. in spain, the use of school uniforms is not required in the public school at any stage. their use depends on school councils involving parents and the head of the school. however, it is customary to wear uniforms in private schools where typically girls wear a uniform shirt and jersey skirt, and boys wear pants, a white shirt, and a tie and sometimes a jacket. source: based on the text, what is a difference between spanish and colombian schools? a) the uniforms required b) the parent participation c) the principal's decision d) the choices for boys and girls

El monte aconcagua,en argentina,mode 6,960 metros de altura .la península valdés ,en argentina ,está a 40 metros bajo el nivel del mar.¿cual es la diferencia en metros,de elevación entre estos dos lugares?

Sheila conducts an investigation to see how the amount of salt dissolved in water affects the density of the water whichstatement best describes the correct plan for her procedure? the density and the amount of water are controls, and the amount of salt and the type of salt are variablesthe amount of water and the amount of salt are controls, and the type of salt and the density are variablesthe type of salt and the amount of water are controls, and the amount of salt and the density are variablesthe type of salt and the density of water are controls, and the amount of salt and the amount of water are variableso