多选题 However, a number of features that are characteristic of wind-pollinated plants reduce pollen waste. For example, many wind-pollinated species fail to release pollen when wind speeds are low or when humid conditions prevail. Recent studies suggest another way in which species compensate for the inefficiency of wind pollination. These studies suggest that species frequently take advantage of the physics of pollen motion by generating specific aerodynamic environments within the immediate vicinity of their female reproductive organs. {{U}}It is the morphology of these organs that dictates the pattern of airflow disturbances through which pollen must travel.{{/U}} The speed and direction of the airflow disturbances can combine with the physical properties of a species' pollen to produce a species-specific pattern of pollen collision on the surfaces of female reproductive organs. Provided that these surfaces are strategically located, the consequences of this combination can significantly increase the pollen-capture efficiency of a female reproductive organ.
The "aerodynamic environments" mentioned in the passage, when they are produced, are primarily determined by the

• A. presence of insects near the plant.
• B. physical properties of the plant's pollen.
• C. shape of the plant's female reproductive organs.
• D. amount of pollen generated by the plant.
• E. number of seeds produced by the plant.