No, they are peacful
They eat aphids to live
Yes, but they only bite small bugs like aphids and scale bugs. They don't bite humans, don't think they have the mandibles to even accomplish such a task!
Yes, aphids bite people. Any insect with piercing, sucking mouthparts is capable of scratching skin surfaces just as they plant tissues. The experience will be more like getting a minor abrasion from a slightly rough surface than like having the skin broken by a bee, hornet, scorpion or wasp sting or a snake bite.
Ladybugs do not bite. They eat aphids so unless you are an aphid you don't have a problem. They are also not poisonous.
No, different ladybugs eat different kinds of aphids. That's why the Asian or Japanese ladybug [Harmonia axyridis] was brought into the United States of America. The native ladybugs [Coccinelidae family] couldn't be counted on to eat pecan tree aphids. But researchers discovered that the Asian variety were voracious eaters of pecan tree aphids in their native lands.
Aphids are sexual.
If you are referring to ladybugs, this is why they are a good thing to have around. They are good for trees and other plant life that aphids feed on. The ladybugs feed on the aphids so the aphids wont chew the leaves of the trees and take away from the beauty of the tree itself. Never kill them as they will not bite. If by chance you really meant ladybud, I looked it up and found a porn site. I don't have any info on that.
Ladybug beetles are certainly not harmful. They are beneficial to farmers because they eat many aphids that would otherwise damage crops. They don't even bite people.
Aphids suck sap.
You attract aphids by putting out roses.
Chickadees, Hummingbirds, and Titmice are birds that will eat rose aphids. Another bird that eats rose aphids is the Warbler.