A praying mantis cannot harm humans outside of small bites and scratches, but as they are not poisonous, these injuries don't hurt any more than an ant bite or rug burn. They are predators, and eat other insects, so in that regard they are helpful; while it is unlikely that they would get the opportunity to snack on a mosquito, they certainly would given a chance. They are more helpful than harmful, but in point of fact are really . . . neutral.
help
their predators are birds, lizards, bats, snakes and turtles
Praying mantises are predators. They eat pest insects that would eat the vegetables.
hahahha
Carabaos are helpful to people because they can be used for milk and food. They can be harmful because it is a large animal that could stomp on a person and kill them.
Nope. Not helpful means I don't to help make people sad mostly. Harmful means you are doing a offense
Some people think that homework is helpful
it dose not ok people an i am asintist
E.coli can be helpful and harmful at the same time if you know what i mean. E.coli produces a toxin that can be very harmful to people. Also,e.coli is helpful because it help digest your food.
Some give us nutrients. Some are harmful.
helpful lol i know that hehe noel loves you
Well, I myself am trying to find out why they are helpful, but landslides are harmful because they can cause injuries, death, buried houses, and people being handicapped and buried alive. Hope that helps! :)