Please help I literally don’t k ow how to do this

An engineering team designs a new rocket that is faster and lighter than any other model being produced. however, the materials end up being so expensive that no company can afford to buy them. which step of the engineering process should have addressed this problem? a. know the background. b. evaluate the results. c. identify a need. d. do the work.

One of the cell membrane's functions is to protect the cell keep wastes in the cell create new cells keep light out of the cell

Two things that biomedical has invented or innvated