Answer:
The first one is false.
As is the second one.
Explanation:
#1- The number one cause of endangerment and extinction is invasive species (humans) which also makes the second statement a false one too.
#2- Humans are a type of invasive species, and we are the #1 cause of extinction because of actions that were not good for the environment. In the process of doing these things, entire species are taken out because of these reckless actions.