The phrase "appears to be sparse" is correct and usable in written English.
It can be used when describing something that seems to lack density, fullness, or detail.
Example: "The data collected from the survey appears to be sparse, making it difficult to draw any significant conclusions."
Alternatives: "seems to be limited" or "looks to be thin".
In the disputed North, occupied until recently by nomadic rebel separatists, the Tuareg, turnout appeared to be sparse; last week, five election officials were kidnapped, and later released, and independence-minded sentiment is still strong.
Investigations of these and other variables for estimating miombo AGB appear to be sparse, and further exploration is warranted.
He was surprised the Senate hopeful would have the nerve to show up to a public event so close to Upper Big Branch, an area where Blankenship campaign signs appear to be sparse.
Although the protuberances described by this research group appear to be sparse, not as well-formed or preserved, the size measurements in one transmission electron micrograph is in close approximation of the sizes of C. gattii fibrils seen in our study [46].
Further, reported side effects of Ang-2 blocking appear to be sparse compared to other anti-angiogenic therapies employed [ 53, 82].
However, the direct projection from the VMH to the PVN appears to be rather sparse, whereas on the other hand massive projections have been described to the DMH and subPVN [48], [49].
The literature in this field appears to be relatively sparse and implies considerable uncertainty regarding the input parameters of our decision analytic model.
3) This appears to be a sparse and weak pathway and it is not clear how significant the functional impact could be, for two reasons: A) Although optogenetic stimulation is very powerful for stimulating all synapses of a specific input simultaneously, the responses still appear rather weak.
