Final answer:
The disadvantage of the pollinator strategy used by grasses and ragweed is that insects will be deprived of their nectar, leading to a decrease in numbers.
Step-by-step explanation:
A disadvantage of the pollinator strategy used by grasses and ragweed is that insects will be deprived of their nectar, leading to a decrease in numbers. Without pollinators, flowering plants will not be affected as other animals can pollinate them. This imbalance can disrupt the ecosystem and lead to a decline in biodiversity. Furthermore, wind pollination is less efficient than insect pollination as it relies on the chance that pollen will land on the stigmas of other flowers, which can lead to a decrease in plant diversity and reproductive success over time.