10: at location y the boundary between the red sand- stone and the black shale marks the

(1) beginning of the cenozoic era
(2) beginning of the mesozoic era
(3) end of the cenozoic era
(4) end of the mesozoic era

11: an unconformity can be observed at location z which rock layer was most probably removed by erosion during the time represented by the uncon- formity?

(1) conglomerate
(3) black shale
(2) gray siltstone
(4) brown siltstone

12 the fossils in the rock formations at location xindi- cate that this area often was covered by

(1) tropical rain forests (2) glacial ice
(3)desert sand
(4) seawater

13 which rock layer was formed by the compaction and cementation of particles that were all less than 0.0004 centimeter in diameter?

(1) red sandstone
(3) brown siltstone
(2) green shale
(4) conglomerate

I think tan limestone is older but not sure so good luck

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.