Problem: British Prime Minister William Pitt's focus on the colonies for the 1758 campaign paid off with the taking of Louisbourg after French reinforcements were blocked by British naval victory in the Battle of Cartagena and in the successful capture of Fort Duquesne and Fort Frontenac. The British also continued the process of deporting the Acadian population with a wave of major operations against Ile Saint-Jean (present-day Prince Edward Island), the St. John River valley, and the Petitcodiac River valley. The celebration of these successes was dampened by their embarrassing defeat in the Battle of Carillon (Ticonderoga), in which 4,000 French troops repulsed 16,000 British.
How did the British assure numerical superiority in taking Louisbourg?
The answer is the following: French reinforcements were blocked by British naval victory in the Battle of Cartagena

Problem: The Emperor Diocletian (r. 284305) split the empire into separately administered eastern and western halves in 286; the empire was not considered divided by its inhabitants or rulers, as legal and administrative promulgations in one division were considered valid in the other.[C] In 330, after a period of civil war, Constantine the Great (r. 306337) refounded the city of Byzantium as the newly renamed eastern capital, Constantinople. Diocletian's reforms strengthened the governmental bureaucracy, reformed taxation, and strengthened the army, which bought the empire time but did not resolve the problems it was facing: excessive taxation, a declining birthrate, and pressures on its frontiers, among others. Civil war between rival emperors became common in the middle of the 4th century, diverting soldiers from the empire's frontier forces and allowing invaders to encroach. For much of the 4th century, Roman society stabilised in a new form that differed from the earlier classical period, with a widening gulf between the rich and poor, and a decline in the vitality of the smaller towns. Another change was the Christianisation, or conversion of the empire to Christianity, a gradual process that lasted from the 2nd to the 5th centuries.
When did the rule of Constantine end?
The answer is the following: 337

Problem: In more recent applications, hydrogen is used pure or mixed with nitrogen (sometimes called forming gas) as a tracer gas for minute leak detection. Applications can be found in the automotive, chemical, power generation, aerospace, and telecommunications industries. Hydrogen is an authorized food additive (E 949) that allows food package leak testing among other anti-oxidizing properties.
What industries can you find these applications?
The answer is the following: automotive, chemical, power generation, aerospace, and telecommunications

Problem: The length and nature of parental care varies widely amongst different orders and species. At one extreme, parental care in megapodes ends at hatching; the newly hatched chick digs itself out of the nest mound without parental assistance and can fend for itself immediately. At the other extreme, many seabirds have extended periods of parental care, the longest being that of the great frigatebird, whose chicks take up to six months to fledge and are fed by the parents for up to an additional 14 months. The chick guard stage describes the period of breeding during which one of the adult birds is permanently present at the nest after chicks have hatched. The main purpose of the guard stage is to aid offspring to thermoregulate and protect them from predation.
What type of seabird has the longest period of parental care?
The answer is the following:
frigatebird