Students were engaged in an argument about major body system interactions that facilitate homeostasis in humans. They discussed that when an individual has a common cold, at least two major human body systems interact more to maintain homeostasis. Which student has the best argument regarding body system interactions that most directly relate to an individual returning to a state of feeling healthier? A.
Student A argued that the nervous system regulates the immune system and the excretory system eliminates waste from the body.

B.
Student B argued that the cardiovascular system returns oxygen-poor blood back to the lungs to be released, and the digestive system breaks down food into usable nutrients.

C.
Student C argued that the immune system fights infections and the cardiovascular system transports white blood cells in the blood.

D.
Student D argued that the muscular system supports movement of the body, while the respiratory system takes in oxygen needed for the blood cells.

The higher you go up the less oxygen there is 

Schools are being forced to embrace computers. unlike their "digital immigrant" teachers, these students are "digital natives", born into a world where technology is an integral part of everyday life. almost every student has access to a multitude of computers, laptops and tablet devices. it would be crazy to assume an assignment would  notbe written on computer in this day and age.many schools now have a 1-to-1 computer policy, and many districts and states in the united states have mandated computers or ipads across the state for every student,  including los angeles, the second largest school district in the country.but the thing is, when they tried it in la, it wasn't the success they hoped for. that's because the tablets weren't used as much as they expected. rather, it appeared there was a gap between the digital native's love of technology and their use of it in the classroom.this conflicted relationship with computers is also underscored by much of the literature on education. it is also highlighted in professional development and conferences such as  edutech.