Contrary to common belief, most vanilla flavoring used in the food industry does not come from the vanilla orchid but _________ is synthesized from petrochemicals or wood pulp.

There are significant physiological differences between reptiles and birds; for instance, the former rely on external heat sources, _________ the latter generate their own body heat.

_________ the teenager spent the entire summer sitting on the couch playing video games.

Many forests contain a mix of deciduous and coniferous trees. Generally, deciduous trees lose their leaves in autumn, _________ conifers remain green throughout the winter, ensuring some cover year-round.

Recognized as a masterpiece of American literature, The Great Gatsby by F. Scott Fitzgerald faced mixed reviews upon its publication _________ its dark themes and cynical view of the American Dream.

While the tunnel project was initially planned to relieve traffic congestion, it was plagued by engineering difficulties and budget overruns _________ its completion in 2007.

_________ it reduces the amount of waste sent to landfills, the municipal recycling program also conserves raw materials and energy.

The mockumentary The Office provides a cringe-inducing look at corporate life; _________ the awkward humor, the show became a global phenomenon because audiences found the characters endearing.

_________ the light bulb was commercially viable in 1879, it had not actually been perfected for mass use until carbon filaments were introduced.

_________ it is often called the "Hundred Years' War," the conflict between England and France actually lasted for 116 years.