A. Hodzic, in Green Composites, 2004 12.5.2 Biodegradation of synthetic polymers. Biodegradation is a natural process by which organic chemicals in the environment are converted to simpler compounds, mineralised and redistributed through elemental cycles such as the carbon, nitrogen and sulphur cycles. Biodegradation can only occur within the biosphere as …

callous: 2. insensitive; indifferent; unsympathetic: They have a callous attitude toward the sufferings of others.

Persevere definition, to persist in anything undertaken; maintain a purpose in spite of difficulty, obstacles, or discouragement; continue steadfastly. See more.

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2 days ago · Some officials in India are ignoring or even supporting rising attacks on people and places of worship in the country, a US official said late on …