Una solución de sal Al 16 % (en masa)

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community

Regarding most of the narrator’s story, which word best describes the tone?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?