Question: Certain bacteria form close spatial associations that are essential for their survival. One such mutualistic association, called interspecies hydrogen transfer, occurs between clusters of anaerobic bacteria that consume organic acids, such as butyric acid or propionic acid, and produce hydrogen, and methanogenic Archaea that consume hydrogen. The bacteria in this association are unable to consume the organic acids as this reaction produces hydrogen that accumulates in their surroundings. Only the intimate association with the hydrogen-consuming Archaea keeps the hydrogen concentration low enough to allow the bacteria to grow.
Try to answer this question if possible: What kind of bacteria can form interspecies hydrogen transfer?
Answer: anaerobic bacteria
Question: For customers with more demanding requirements (such as medium-to-large businesses, or other ISPs) can use higher-speed DSL (such as single-pair high-speed digital subscriber line), Ethernet, metropolitan Ethernet, gigabit Ethernet, Frame Relay, ISDN Primary Rate Interface, ATM (Asynchronous Transfer Mode) and synchronous optical networking (SONET).
Try to answer this question if possible: what is SONET? 
Answer: synchronous optical networking
Question: When Richard was five years old, his mother gave birth to a younger brother, but this brother died at four weeks of age. Four years later, Richard gained a sister, Joan, and the family moved to Far Rockaway, Queens. Though separated by nine years, Joan and Richard were close, as they both shared a natural curiosity about the world. Their mother thought that women did not have the cranial capacity to comprehend such things. Despite their mother's disapproval of Joan's desire to study astronomy, Richard encouraged his sister to explore the universe. Joan eventually became an astrophysicist specializing in interactions between the Earth and the solar wind.
Try to answer this question if possible: What career did Joan lose?
Answer: unanswerable
Question: There was a special case established under the State Management Scheme where the brewery and licensed premises were bought and run by the state until 1973, most notably in Carlisle. During the 20th century elsewhere, both the licensing laws and enforcement were progressively relaxed, and there were differences between parishes; in the 1960s, at closing time in Kensington at 10:30 pm, drinkers would rush over the parish boundary to be in good time for "Last Orders" in Knightsbridge before 11 pm, a practice observed in many pubs adjoining licensing area boundaries. Some Scottish and Welsh parishes remained officially "dry" on Sundays (although often this merely required knocking at the back door of the pub). These restricted opening hours led to the tradition of lock-ins.
Try to answer this question if possible: What was the mandated closing time of pubs in Kensington in the 1960s?
Answer:
10:30 pm