They will not be allowed to join the eco-tour __________ they agree to follow sustainable travel guidelines.

The Amazon rainforest is disappearing faster __________.

Wildlife activists argue that dolphins should not be kept in __________ for entertainment purposes.

Teacher: You seemed distracted in class today. __________

Cloe: I'm sorry, I've just been stressed about the upcoming exams.

If the turtle __________ injured, it could be released back into the wild immediately.

Cultural heritage sites are as significant for preserving history __________ they are for attracting visitors from around the world.

__________, the hatchlings will struggle to survive.

The Tasmanian tiger is officially considered __________, as no confirmed sightings have occurred since 1936.

The monarch butterfly has become a(n) __________ species because of habitat loss and pesticide use.

A(n) __________ species of frog was discovered in the Amazon rainforest, with only a handful of individuals ever recorded.

Visitors are allowed to camp by the lake __________ they obtain the necessary permits beforehand.

Turtles have evolved over millions of years to __________ in both aquatic and terrestrial environments.

After the oil spill, volunteers rushed to __________ seabirds covered in oil, carefully cleaning their feathers to save them.

Efforts to replenish wetlands have been successful in attracting migratory birds back to the area.

The bird's abnormal behavior, such as circling repeatedly in the air, suggested it might have been impacted by light pollution.

Thanks to stricter regulations and global awareness campaigns, deforestation isn't happening so rapidly as it did in previous decades.

The vaquita, a small porpoise native to the Gulf of California, is critical endangered with fewer than 10 individuals left.

If sea turtles wouldn't be endangered, we wouldn't need so many conservation efforts to protect them.