Helpful, without it you could not digest your food.
Bacteria can be both harmful and helpful. Harmful bacteria can cause diseases in humans, animals, and plants. However, some bacteria are beneficial and play important roles in processes like digestion, nutrient cycling, and decomposition.
Bacteria can be helpful by deleting bad viruses and harmful by killing you
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There are many, many types of bacteria. They can be both harmful and helpful to us. Also, even if there were to be helpful in a certain part of the body they may also be a pathogen in another.
it can be helpful or harmful
Ladybird's favorite food is Aphid (greenfly/blackfly) which attack plants. Ladybirds are a beneficial insect and gardners and Horticulturalists encourage them.
sometimes they are helpful and harmful.
some bacteria can be very helpful. There is bacteria that are in human's intestines and they help in digestion. There is also friendly bacteria such as intestinal flora and micro flora which release helpful vitamins.
True. There are microorganisms (bacteria) that cause disease but most of the bacteria in the human body are necessary for the body to function. For example, your stomach and intestines have good bacteria that are important for propeer digestion of food.
Sandpaper is both helpful and harmful.
Some helpful bacteria include Lactobacillus and Bifidobacterium, which are commonly found in probiotic foods and supplements. These bacteria can aid in digestion, support a healthy immune system, and help maintain a balanced gut microbiome.
I'm sure you know that it can be both like the E.coli bacteria that lives in your colon is helpful, but if it grows uncontrollably you can develop a disease so i would say that they are more harmful than helpful