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Q: Is the crab beneficial or harmful for the humans?
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Are gecko's harmful to humans?

No, geckos are not harmful to humans. If anything, they are beneficial to humans because they eat insects


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Some bacteria are beneficial to humans, and some bacteria are harmful to humans.


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Yes it is very harmful to humans by poisen.


Give an example of beneficial and harmful interaction between humans and the environment?

Human-Trees


Is mutation always harmful for human body?

No. Although there is a chance of a beneficial mutation, the chance of it occurring is almost astronomical. Most mutations are harmful to humans.


What are the harmful and beneficial effects of advertising?

the harmful and the beneficial effects of advertising?


Is diphtheria harmful or beneficial?

Harmful.


Is protozoa harmful or helpful?

Paramecium cilia are little hairs around its body that can make it move in different directions. It is beneficial to the paramecium to get food (bacteria) and there are no harmful effects.


Are cows beneficial or harmful?

Cows are very beneficial.


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it is a beneficial plant


Is a pathogen beneficial to humans harmful to only plants harmful to living organisms or nearly extinct?

Pathogen means "disease-causing" (pathos-: suffering, disease; -gen: begetting) Therefore: "harmful to living organisms" For the other answers: beneficial organisms are not pathogens; harmful only to plants are specifically plant pathogens; "nearly extinct" has no relevance in this question.


How does human impact affect Saguaro?

Yes, humans affect the life of the giant saguaro cactus [Carnegiea gigantea]. That effect may be harmful or beneficial. Examples of harmful effects are impervious surfaces, pollution, and traffic. Examples of beneficial effects are protected lands and protective legislation.