A marine biologist wishes to test the hypothesis that heavy grazing by fish causes the brown alga Laminaria to stay short rather than grow upright. Which of the following variables could be manipulated successfully at the shore to test this hypothesis?
ОА.
add nutrients to the ocean water around the algae to see if it will grow taller
OB. increase the amount of dissolved carbon dioxide in the water around the algae to see if they grow taller
OC. place a netted screen around the algae to restrict fish from grazing on the algae and check for any change in growth
OD alter the intensity of light to see if this is the cause of the algae's stunted growth
O E. protect the algae from ocean waves to see if wave shock is causing the stunted growth

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.

The answer is one amu.