(Uv-b rays) can be harmful.Logical formLearned from3 sentences. Activities can be harmful to a country.Logical formLearned from3 sentences. Organisms can be harmful to plants.Logical formLearned from3 sentences. Chemicals can be harmful to a body.Logical formLearned from3 sentences. Foods can be harmful to human health.Logical formLearned from3 sentences. (Synthetic hormones) can be harmful to humans.Logical formLearned from3 sentences. (Swine fever) can be harmful to humans.Logical formLearned from3 sentences. Moths can be harmful.Logical formLearned from3 sentences. A disease can be harmful to human health.Logical formLearned from3 sentences. Practises can be harmful.Logical formLearned from3 sentences. Movements can be harmful.Logical formLearned from3 sentences. Assets can be harmful.Logical formLearned from3 sentences. Shipments can be harmful.Logical formLearned from3 sentences. (Cigarette smoking) can be harmful to persons.Logical formLearned from3 sentences. Acts of an Israeli army can be harmful to peace of a region.Logical formLearned from3 sentences.