A team of students from UGA are completing a field study to determine the impact the American alligator has on ecosystems in places such as the Okefenokee Swamp in South Georgia over a 3-month period. In one area, they have removed the alligators and in another area they have left the alligators. After 18 months they measure the total number of different species living in each area. What it the hypothesis the students are testing? *

A) If the American alligator is a keystone species, then the ecosystem with alligators absent will be healthier and contain greater biodiversity
B) If the American alligator is a tertiary consumer, then the ecosystem with alligators absent will contain more primary producers.
C) If the American alligator is a tertiary consumer, then the ecosystem with alligators present will contain fewer primary producers.
D) If the American alligator is a keystone species, then the ecosystem with alligators present will be healthier and contain greater biodiversity.

The answer would be a. aluminum can

2hydrogen and 1 covalent

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.