Yes there they eat flys
very harmful
harmful
no
Helpful in the stratosphere, harmful in the troposphere.
computer.. both helpful and not..
Marsupials are helpful to humans in that they keep grasses and plants at manageable levels. They are only harmful to humans when they get too close and scare the animals.
The striped wolf spider is not harmful to humans but if you are bit by one it will be very pain full
Ticks are often harmful to humans. For instance, the sheep tick could cause Lyme disease in humans.
No they are harmful to humans. They eat grasshoppers.
Is leptospira helpful or harmful to humans
Can be both harmful and helpful. They can be harmful to humans because, many types of amoebas can carry diseases, and some can feed on human tissue. They can get into our body by, contaminated food and contaminated water. Amoebas are also helpful because they are part of the food chain.
they are helpful for pest control in gardens, but are harmful for anything that tries to eat it from the spikes on its back. for humans, it is no more harmful than a hamster that doesn't like you