a cicada is harmful because they take pollen from plants
Protists can be both helpful and harmful. Some protists are beneficial as they play key roles in ecosystems, such as being primary producers in marine environments. However, some protists can also be harmful pathogens that cause diseases in humans, animals, and plants.
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.
Algae can be both harmful and helpful. Harmful algae blooms can release toxins harmful to aquatic life and human health. However, algae are also vital to aquatic ecosystems as they produce oxygen through photosynthesis and serve as food for organisms in the food chain.
Dinoflagellates can be both helpful and harmful. Some species are important producers in marine ecosystems as they play a key role in the food chain. However, certain dinoflagellates are also responsible for harmful algal blooms that can have negative impacts on marine life and human health, through the production of toxins.
Cellular slime molds are helpful because they play a role in breaking down organic matter in soil, contributing to nutrient recycling. However, they can also be harmful as some species can cause damage to agricultural crops and garden plants.
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it can be helpful or harmful
sometimes they are helpful and harmful.
Sandpaper is both helpful and harmful.
they are helpful not harmful to plants
helpful
helpful
Depends on what part of "harmful" or "helpful" you are referring to.
Harmful bacteria will harm you. Helpful bacteria will help you.
Slash and burn does not sound helpful, it sounds harmful.
helpful
Helpful.