The phrase "are comparatively rich" is correct and usable in written English.
It can be used when comparing the wealth or resources of one group or entity to another, indicating that they have more wealth relative to the other group.
Example: "In this study, we found that urban households are comparatively rich when compared to their rural counterparts."
Alternatives: "are relatively affluent" or "are more wealthy in comparison".
The hornblende- and biotite-andesites are comparatively rich in feldspar and are usually pale pink, yellow, or gray.
In our previous work[11, 12], we found that hexagonal rods are the preferred morphological configuration in localized areas that are comparatively rich in oxygen content, whereas rectangular nanoplates/boxes are preferred in localized regions with comparatively low oxygen partial pressures.
Carbonaceous chondrites are comparatively rich in mineralogically bound OH.
"During the New Deal, New York was comparatively rich, and other regions were in crisis.
The coals being comparatively rich in vitrinite indicate their formation in a deeper basin.
The ash content of 8.73% suggests that the stem is comparatively rich in mineral elements, and may contains inorganic radicals like phosphates, carbonates, and silicates of sodium, potassium, magnesium, calcium etc.
It was found that most of the sequence variations were divided among all of the domains but N-terminal and middle portion of the reported NS3 protein were comparatively rich in variations.
Quantitative estimation proved that all the extracts of T. ammi and F. vulgare seeds possess significant amount of total phenolics and flavonoids (Table 3); however, acetonic seed extract of both T. ammi and F. vulgare was comparatively rich in phenolic (0.432 ± 0.9 mg/g tannic acid equivalent in AAcSE and 0.364 ± 1.1 mg/g tannic acid equivalent in FAcSE) compounds.
Their milk is comparatively richer in proteins and milkfat than dairy cows, which can be an explanation for the quick growth of eland calves.
While Ica is comparatively richer and more urban than Ayacucho, rural areas represent still a substantial proportion of this latter department.
But Google's offering is comparatively robust.
