245 million years ago ( i have the same question lol)
Hearing gives an animal advantages such as being able to listen out for predators, so the animal can run away. The hearing can aid the animal when hunting for other animals, because it can stay still and wait for the right timing to attack, etc.
Hello!
There are three elements that must be present for infections to spread within a healthcare setting. They are:
• Source of pathhogens.
• Route of transmission.
• Susceptible host.
I really hope my answers helped you! c:
