Unlike mammals, fish a. release carbon dioxide. b. need oxygen to survive. c. can take in oxygen from the air. d. utilize gills for gas exchange.

Correct
Option D: Utilize gills for Gaseous Exchange

The main difference between the Fish and Mammals including the Marine Mammals is that gaseous exchange in fish is through the gills. Gills allow the fish to breathe underwater. Mammals do not have gills. Marine mammals can not breathe underwater and have to come to the surface to breathe. Therefore, the correct answer to this question is that Unlike Mammals, fish utiliza gills for gaseous exchange. 

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.

Synapse nervous system they process and transmit signals. in a neuron