Help make Alexa smarter on Alexa Answers. Sign in with Amazon

Sign in with Amazon

Science

Why do we have kneecaps?

to prevent the knee joint from rotating forward.

{{ relativeTimeResolver(1648053824957) }}

LIVE

2

Rating

Similar questions

Why do we have dreams?

Science • 1

Why do we have toenails?

Science • 1

Why do we have clouds?

Science • 1

Why do we have parents?

Science • 1

Why do we have veins?

Science • 2

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world