Many animals influence and contribute to ecosystem services. As pollinators, how do bees ultimately contribute to direct ecosystem services?

Bees pollinate plant species that contribute to the carbon cycle.
Bees pollinate plant species that produce oxygen that humans need.
Bees pollinate plant species that produce food.
Bees pollinate plant species that humans admire in nature.

Bees contribute to direct ecosystem services by pollinating plant species that produce food. This includes fruits, vegetables, and nuts that are essential for human diets. Without bees, many of these plant species would not produce crops, leading to a decrease in food production. Bees play a crucial role in ensuring a stable and diverse food supply for both humans and wildlife.