Question: In grading lumber and structural timber, knots are classified according to their form, size, soundness, and the firmness with which they are held in place. This firmness is affected by, among other factors, the length of time for which the branch was dead while the attaching stem continued to grow.
Try to answer this question if possible: Along with firmness, soundness, and form, what property of a knot is classified?
Answer: size
Question: The scientific evidence is mixed as to whether companionship of a dog can enhance human physical health and psychological wellbeing. Studies suggesting that there are benefits to physical health and psychological wellbeing have been criticised for being poorly controlled, and finding that "[t]he health of elderly people is related to their health habits and social supports but not to their ownership of, or attachment to, a companion animal." Earlier studies have shown that people who keep pet dogs or cats exhibit better mental and physical health than those who do not, making fewer visits to the doctor and being less likely to be on medication than non-guardians.
Try to answer this question if possible: People who have cats or dogs make fewer visits where?
Answer: to the doctor
Question: As with the rest of the UK, Southampton experiences an oceanic climate (Koppen Cfb). Its southerly, low lying and sheltered location ensures it is among the warmer, sunnier cities in the UK. It has held the record for the highest temperature in the UK for June at 35.6 C (96.1 F) since 1976.
Try to answer this question if possible: What kind of climate does Southampton have?
Answer: oceanic
Question: In 2003, a congestion charge was introduced to reduce traffic volumes in the city centre. With a few exceptions, motorists are required to pay 10 per day to drive within a defined zone encompassing much of central London. Motorists who are residents of the defined zone can buy a greatly reduced season pass. London government initially expected the Congestion Charge Zone to increase daily peak period Underground and bus users by 20,000 people, reduce road traffic by 10 to 15 per cent, increase traffic speeds by 10 to 15 per cent, and reduce queues by 20 to 30 per cent. Over the course of several years, the average number of cars entering the centre of London on a weekday was reduced from 195,000 to 125,000 cars a 35-per-cent reduction of vehicles driven per day.
Try to answer this question if possible: What is the daily cost for most drivers to operate their cars within a given zone in the center of London?
Answer:
10