The phrase "and variable levels of" is correct and usable in written English.
It can be used when discussing different degrees or amounts of something, often in a scientific or analytical context.
Example: "The study examined the effects of stress on performance, considering various factors and variable levels of anxiety among participants."
Alternatives: "and differing degrees of" or "and fluctuating amounts of".
Inject determination, solid work ethics and variable levels of positive aggression into that mix, and Moyes has a player who can adapt to almost any situation.
Moreover, these mice also show low and variable levels of T-cell-dependent antibody reShultzs (Shultz et al., 2007).
Due to technical challenges, economic constraints and variable levels of capacity, the implementation of surveillance systems remains variable.
The livestock species kept include camels, cattle, sheep, goats, and donkeys, all of which have different forage and water requirements and variable levels of resilience to drought.
The remainder of the Holocene (since 8800 cal yr BP) at Burial Lake is characterized by relatively high and stable lake levels, landscape stabilization, and relatively high and variable levels of aquatic productivity.
The study area is inhabited by the Turkana pastoralists whose major occupation is extensive livestock production (Watson and van Binsbergen [2008]).The livestock species kept include camels, cattle, sheep, goats and donkeys, which have different forage and water requirements and variable levels of resilience during drought episodes.
However, additional simulation time and variable level of skills and knowledge required are major drawback of computer simulations.
The sheer volume of abuse locations and variable level of information about exact times, dates and addresses precluded more sophisticated analysis such as hotspot mapping.
Because of the large and variable level of naturally-occurring CO2, and rapid dispersion in the atmosphere, leakage to atmosphere can be difficult to detect from concentration measurements.
Also, the study involved participants with different pathologies and variable level of spinal cord lesions.
These results suggest the possibility of multiple minor-effect genes in the 75A-76D region, but the low and variable level of rescue precluded further mapping.
