Use of manures may cause diseases, but com posted manure is safe to use. Give reason.

Explanation

**Step-by-Step Solution:**

1. **Understanding Manure**: Manure is organic matter, often derived from animal waste, that is used as fertilizer in agriculture. However, untreated manure can contain harmful pathogens and parasites.

2. **Pathogens and Parasites in Untreated Manure**: Untreated manure can harbor various pathogens such as Salmonella and E. coli, as well as parasites like roundworms and tapeworms. These organisms can contaminate crops and pose health risks to humans and animals.

3. **Impact on Crops**: When untreated manure is applied to crops, the pathogens and parasites can be absorbed by the plants, especially root crops and leafy vegetables. This contamination can lead to foodborne illnesses when these crops are consumed.

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