Human impact on the environment or anthropogenic impact on the environment includes impacts on biophysical environments, biodiversity, and other resources. The term anthropogenic designates an effect or object resulting from human activity.
Animals can be divided broadly into vertebrates and invertebrates. Vertebrates have a backbone or spine (vertebral column), and amount to less than five percent of all described animal species. They include fish, amphibians, reptiles, birds and mammals. The remaining animals are the invertebrates, which lack a backbone. These include molluscs (clams, oysters, octopuses, squid, snails); arthropods (millipedes, centipedes, insects, spiders, scorpions, crabs, lobsters, shrimp); annelids (earthworms, leeches), cnidarians (jellyfish, sea anemones, corals), and sponges.
Hamsters do indeed have backbones, and this comes with some advantages. One example is bodily support. Animals that have vertebral columns can grow very large thanks to the added support, and vertebrates are the planet's biggest animals.nimals that don't have backbones are known as invertebrates. Invertebrates look structurally totally different than vertebrates. They include creatures such as jellyfish, crabs, spiders, bees, butterflies, snails, flies, clams, worms and beetles.