Large scale adaptations of the two-hybrid technique have allowed for determining many protein interactions at once using:.a. systems biology. b. nuclear magnetic resonance imaging. c. mass spectrometry. d. protein microarrays.

systems biology

Explanation:

A two-hybrid technique is a technique that can be used to know the protein-protein interactions or the protein-DNA interactions. This is done through the test for physical interactions that exist between the two proteins or the proteins and their DNA molecules.

It should be noted that large scale adaptations of the two-hybrid technique have allowed for determining many protein interactions at once using systems biology. It should be noted that systems biology focuses on the complex interactions that are within the biological systems.

littering streams           is the answer

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."