However the effectiveness of these organisations is limited by the state.
Currently, data on the effectiveness of these measures are limited.
However, the effectiveness of these approaches is limited by researchers' understanding on the aesthetic rules.
However, the effectiveness of these wetlands is limited for pesticides with low Koc or high DT50 values; thus, the use of these molecules must be reduced.
The effectiveness of these technologies is limited by an inadequate understanding of sorption, desorption, and mercury species involved in internal loop mercury control.
However, in the US, the practical effectiveness of these devices is limited because only a small number of offenders are willing to install them in order to drive legally.
Although there is a large amount of research in literature which includes usage of technology in mathematics classrooms, especially calculus classrooms, the effectiveness of these studies is limited because the expectations and demands of students are not taken into account (Marshall et al. 2012; Samuels, 2010; Swidan & Yerushalmy, 2014).
Data show that college students in Taiwan spend a total of 1 billion new Taiwan dollars (about USD30 million) every 4 years on taking English standardized tests, but the effectiveness of these tests is limited, and there is no evidence that taking English standardized tests helps to increase students' learning motivation or English communication skills (Her et al. 2013).
However, evidence for the effectiveness of these strategies is limited.
The effectiveness of these approaches is limited and controversial [ 2, 3].
