Question: Bacteria in soil convert atmospheric nitrogen into a form usable by plants, and nitrogen deficiency increases the stress on the plants. Given these facts, what does bacteria in the soil help to prevent among the following options: - contamination - colder weather - Pollution - anemia - plant stress - Greenhouse gasses - toxins - disease
Answer: plant stress

Question: If the amount of available food and water decreases in an environment then animals may leave that environment to find food and water, and famines occur when there is a general shortage of food. Given these facts, animals may leave an environment during which event among the following options: - Birth - Winter - Tropical - Rainstorm - flooding - Hibernation - Famine - storms
Answer: Famine

Question: If an object is made of a material then that object has the properties of that material, and headings include Materials Research, Materials, Ceramic Materials, Composite Materials. Given these facts, if an object is what of a Ceramic then that object has the properties of Ceramic among the following options: - edible - combined - heat - part - Joules - attached - made - unique
Answer:
made