They are electromagnetic waves because mechanical waves have to be physically created by something, while electromagnetic waves are just emitted without any effort or force.
I'm pretty sure it's the Eichhornia crassipes. It is a water hyacinth, and it was overgrown in the Lake Victoria area.
The reason why the year consists of 365 days is because it takes 365 days for our planet to make one full revolution around the sun and the reason why the day consists of 24 hours is because it takes 24 hours for our planet to make one full rotation.
Answer: show what's happening to are earth
Explanation:
