Invertebrates are animals that neither possess nor develop a vertebral column (commonly known as a backbone or spine), derived from the notochord. This includes all animals apart from the subphylum Vertebrata.
how are invertibrates classified?
Invertebrates. Animals can be classified as either vertebrates or invertebrates. Invertebrates are animals that don't have a backbone. Other invertebrates, like insects, spiders and crustaceans, have a hard outer casing called an exoskeleton.
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cebu, benguet, and zamboanga del norte are three known areas where copper and gold mines are situated. in the philippines, the mining industry is a very lucrative business. however, people in the vicinity of mining sites are not happy with the destructive effects that mining operations bring. most are also targeted by the new people’s army (npa) for extortion activities.