Answer:
Plastic. Out of all the raw materials for 3D printing in use today, plastic is the most common. ...Powders. Today's more state-of-the-art 3D printers use powdered materials to construct products. ...
Resins. ...
Metal. ...
Carbon Fiber. ...
Graphite and Graphene....
Nitinol. ...
Paper...
Explanation:
I am certain that the difficulties of maintaining a long-term immune memory to influenza viruses are due to the Antigenic shift from zoonotic sources.
The adaptive immune response is intiated when the DCs present viral antigens to the naive and memory T-lymphoctes. During an influenza infection, the antigens are acquired by the DCs through two different mechanism.
<span>Blowflies burrow into the ground at the completion or, 4th instar stage (17 mm size,) of their larval growth. After burrowing into the ground, the larvae transform into the pupal stage. They remain underground in the pupal stage for 6 to 8 days at which time the adult fly emerges.</span>
I believe that's grass as it's the producer which is at the bottom of the food chain. This feeds the class I consumers which are consumed by the class II consumers and so on. So that means grass would have the largest impact.
Macromolecules, hope this helps.
