Mike grew tomatoes on his parcel of land and so did John. Mike's attempt was very successful, because he adjusted the soil's pH to a viable level for growing vegetables, and John didn't. Both parcels had soils with lots of sodium carbonate in them. John's experiment failed. Which soil had less unfavorable physico-chemical properties?
Ans: Mike's

Ethiopia and Sudan are two neighboring countries where extreme poverty can be seen. Still Ethiopia has pushed for women's education in the last decade. Sudan has largely failed in investing on women's education. Elsewhere in Africa, the country of Botswana has just overcome extreme poverty, thanks to vast mineral deposits. But they invested on women's education. Would Ethiopia's economic growth be slower or faster than Sudan's one?
Ans: faster

Two groups of students learned about protozoa for a school project. Group P studied more about predatory protozoa, while group G studied about grazing and parasitic protozoa, plus portozoa as food sources. Which group learned less about protozoa that graze on algae?
Ans: Group P

A science teacher is attempting to show his students how kinetic energy works in gases. In order to do so, he leaves the classroom with two beakers filled with the same type of gas. He goes to the kitchen and heats one beaker up on the stove, but does nothing to the other beaker. He then returns to the classroom and has the students examine the gases. The students observe that the kinetic in beaker G is higher than that of the gas in beaker R. Which beaker did the teacher place on the stove?
Ans: beaker G