The phrase "additional effort was necessary" is correct and usable in written English.
It can be used when discussing a situation where more work or resources were required to achieve a goal or complete a task.
Example: "Despite our initial plans, additional effort was necessary to meet the project deadline."
Alternatives: "extra effort was required" or "further effort was needed."
Analysing Table 1, we notice that in three applications (Stacks, Subj-obs and Bean), no additional effort was necessary considering all testing approaches.
The results are presented in table 2. According to the evaluation of both groups, predominantly no or only very little additional effort was necessary to handle the format, whereas the students of the CBE-group noted higher mental exertion due to the CBE format (CBE: 2.3, PBE: 1.1, p < 0.001).
This means that an additional effort is necessary compared to A1 and A2.
Additional efforts are necessary to improve the empirical presentation of the electron concentration vertical distribution in topside ionosphere.
These mass requirements show that additional efforts are necessary to increase the number of available targets and reduce on-orbit mass requirements through advanced mission architectures.
Thus, additional efforts are necessary to clarify the mechanism underlying the deregulation of mTOR in LEAT.
Still, additional efforts are necessary in order to solve the many questions on stem cells' clinical application.
Additional efforts are necessary to reach the ideal or even a reasonable level of patient safety-first practice in current hospital environments.
Obviously, additional efforts are necessary to reach the ideal or even a reasonable level of patient safety-first practice in current hospital environments.
Further, additional efforts are necessary to integrate and correlate the physical contig map with the other available genetic maps of chickpea for locating all mapped genes and QTLs to physical map contigs.
High inspection effort is necessary to guarantee the workpiece quality.
