[originaltext] Environmental groups in the U.S. are leading a campaign to sa

Environmental groups in the U.S. are leading a campaign to save thousands of endangered sea turtles. They say illegal turtle hunting is one of the major threats to endangered sea turtles in southern California and Mexico. It has been illegal to harvest and eat sea turtle meat in Mexico for more than ten years. However, demand for sea turtle meat is widespread in both Southern California and Mexico. Biologists believe that illegal hunting is one of the main reasons for the sharp drop in sea turtle populations during the past thirty years. The week before Easter Sunday is an especially deadly time for the turtles. As many as 5,000 turtles are killed during this time each year. Many Mexicans and Mexican Americans eat turtle meat during the days before Easter because they are forbidden to eat meat at that time for religious reasons, and turtle flesh is considered fish. The Sea Turtle Conservation Network sent a letter to Pope John Paul. They urged the Roman Catholic Church leader to officially declare that sea turtle flesh is meat, not fish or seafood. They say thousands of these endangered animals would be saved if people did not eat them during this religious period. About 35,000 endangered sea turtles are killed illegally near the coasts of California each year. Studies have shown a sharp drop in the numbers of females. They travel from as far away as Japan to lay their eggs on local beaches. Environmental activists say hunting sea turtles for their meat is the main barrier to the recovery of the species. They have urged the governments of the U.S. and Mexico to improve enforcement of the ban on sea turtle harvesting.
Questions 22 to 25 are based on the passage you have just heard.
22. What is mentioned by environmental groups as one of the main threats to endangered sea turtles in southern California and Mexico?
23. Why do many Mexicans and Mexican Americans eat turtle meat during the days before Easter?
24. How many sea turtles are killed illegally near the coasts of California each year?
25. What did environmental activists and organisations do to save sea turtles?