Which of the following best explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?
A. There is less energy available in the producers because their tissues are less dense
than those at higher trophic levels.
B. There is more energy available in the second trophic level because less energy is
needed for hunting compared to the higher trophic levels.
C. There is more available energy in the birds of prey because they have greater
muscle mass for storing energy than organisms in lower trophic levels have.
D. There is less available energy in the fourth trophic level because of the loss of
energy through metabolism in each of the lower trophic levels.

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.