No, rattlesnakes do not interbreed with copperheads.
Rattlesnakes of the genus crotalus have small scales covering the top of the head. Those of the genus sirtrurushave large scales, or plates, on the top of the head.
Cross-bridge
4 valve sohc/dohc heads and hemi heads are both cross flow heads. It is because the intake valve is across from the exhaust veruses inline as with regular 2 valve wedge heads.
Copper heads were people in the Union who opposed the war.
myosin
rats and mice and small lizards and crickets
Cross bridge
Worthless - apple heads are discouraged!
Wheat, is used to breed the sheep. When they're ready to breed small hearts pop up over their heads.
To help encourage there eyes to cross.
Depends on the breed. One type will run, the other will curl up into a ball.
Yes Massachusetts has Timber Rattlesnakes and Copper Heads but only one person on record has been killed by a snake in MA and that was about 200 years ago. They are usually found in mountain areas.