Why is it hard for scientists to figure out what pythons have eaten?(A)Pythons do not leave a good record of diet in gut contents.(B)Pythons are excellent at hiding in wetland environments.(C)Pythons get very aggressive when approached and trapped.(D)Pythons that are not hungry anymore just rest and digest.

When they're hungry ! Large snakes such as boas & pythons generally eat a large meal - then rest for a few weeks to digest it.

Explanation:

The raccoons, marsh rabbits, opossums and other small, warmblooded animals are gone. Or.. almost gone, because Burmese pythons seem to have eaten them. The marsh’s weird outdoor quiet is the deep, endlessly patient, laser-focused quiet of these invasive predators.

Scientists say that the snakes are responsible for a recent 90 to 99 percent drop in the small mammal population in the national park.

No one knows how many pythons are out there now. Estimates run from 10,000 to perhaps hundreds of thousands. A problem with trying to count them is that they’re what scientists call “cryptic”—hard to detect.

the answer to the blank is recite