Sentence examples for this occurs has from inspiring English sources

Studies have shown that the seed's whirling, called auto-rotation, gives it extra lift, but why this occurs has never been explained.

Thus, the speed at which this occurs has important implications for extensive faunal changes, including adaptive radiations and recovery from mass extinctions.

How this occurs has been explained in several ways, either as an autocatalytic process or as an informational process, or both.

However the mechanism by which this occurs has not yet been elucidated.

The mechanism by which this occurs has been unknown.

However, the mechanism by which this occurs has not been determined.

Note how all of the values for which this occurs have ρ < 0. Parameter values as in Appendix B.1.

The signals that regulate the specification of neural retina cells and when this occurs have not yet been defined.

If this occurs, have the scout go to where the sheep is.

Why and how this occurred has important implications for American policy today.

However, the risk of this occurring has not been clearly quantified in the literature.