What hypothesis were the researchers testing in this study? What hypothesis were the researchers testing in this study? Sugar beet seedlings have a higher rate of fungal infection in heated soils. Soils can be treated to reduce their ability to suppress fungal disease in seedlings. Sugar beet seedlings have a lower rate of fungal infection in disease-suppressive soils. The disease-suppressive properties of soils are due to the activities of soil microorganisms.

What hypothesis were the researchers testing in this study? The disease-suppressive properties of soils are due to the activities of soil microorganisms.

Explanation:

Scientists wanted to know if microorganisms protect against crop disease. Researchers tried to figure out if microorganisms were responsible for the protective effects of disease-suppressive soils. The spil layer surrounding plant roots is called. When plants are attacked by fungal or bacterial pathogens, soil from the rhizosphere may protect them from future attacks.

equal distribution i think.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?