9. Why did the Irish potato famine occur? O A. The farmers planted a variety of potatoes that were infected by a potato blight.
O B. The farmers didn't plant enough potatoes.
O C. The farmers all planted the same potato variety, which was susceptible to a potato blight.
O D. Potatoes don't have enough nutrients to be a staple crop.

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla

In the diagram below, which organelle is a ribosome, which combines amino acids and produces proteins? оооо