The phrase "are potentially higher" is correct and usable in written English.
It can be used when discussing possibilities or probabilities regarding levels, amounts, or values in a comparative context.
Example: "The costs of the project are potentially higher than we initially estimated due to unforeseen circumstances."
Alternatives: "may be greater" or "could be elevated".
Generally, Cd accumulation in shoots and grains are potentially higher in indica cultivars compared to japonica cultivars (Arao and Ae 2003; He et al., 2006b; Uraguchi et al. 2009b) and moreover, some specific cultivars among indica rice accumulate much higher Cd in vegetative tissues and grains (Uraguchi et al. 2009b).
In other words, the sensitivities of the MGA are potentially higher than the others at the same specificity level.
The stakes are potentially high.
While the rewards are potentially high, they are by no means uniform.
"The impacts are potentially high for otherwise healthy people, animals and plants," the report states.
Don't be fooled by the descent into nuance, however: for much of the industry, and for Oracle in particular, the stakes are potentially high.
GTR adds both a significant and relatively low risk earnings stream (because Go-Ahead is not taking passenger revenue risk) albeit cost execution risks on integration are potentially high.
The Associated Press also reported, citing a Government Accountability Office investigation, that the US Interior Department's Bureau of Land Management had failed to adequately inspect thousands of oil and gas wells that are potentially high risk for water and environmental damage.
Major advantages of algae are potentially high yield and no competition with food crops for arable land and fresh water resource.
He said that having his work on Wikipedia has increased his online visibility as reflected in search-engine results and traffic to his Web site,, but that the costs are potentially high.
Third, the rewards for transporting bushmeat are potentially high".
