The phrase "and by what processes" is correct and usable in written English.
It can be used when inquiring about the methods or means by which something is done or achieved.
Example: "The researchers were curious about the results of the experiment and by what processes the changes occurred."
Alternatives: "and through what methods" or "and by which means".
We use data from a few recent privatization processes to show how and by what processes R&D activities are affected in terms of amount and origins of funds allocated, scope of projects funded, and reliance on outside collaborations.
Using a ten-week panel experiment designed to capture the low-information context of most congressional races this study contributes to our understanding of when and by what processes issue information produces enduring effects.
The distribution and movement of arsenic was investigated on the Aberjona watershed in eastern Massachusetts for the purpose of identifying where and by what processes present and past human exposures to this element could have occurred.
An important problem in the study of microparticles in the marine environment, suspended in the water column or deposited as sediment on the ocean bottom, is the determination of provenance of the microparticles where did they come from and by what processes were they transported to the sampling location?
To our knowledge, this is the most rigorous attempt to establish whether schools influence pupils' rates of sexual experience other than through the formal curriculum, and if so, by what processes.
But when will it be possible to achieve a system for everyone else… and by what process?
But how were these people selected and who will succeed them — and by what process?
"Explain where this huge increase in biomass comes from and by what process".
Two of the versions had the order of prompts "What process adds this huge increase in biomass?" and then "and where does the biomass comes from?" The other two versions had the reverse order of prompts, "Explain where the huge increase in biomass comes from" and then "and by what process".
By what processes have marine ecosystems interacted with human societies?
If descriptions do not fix extensions, and some external factor fixes extensions, then by what process are extensions fixed?
