Do Amphibians Have Double Life?

Do Amphibians Have Double Life? All amphibians spend part of their lives in water and part on land, which is how they earned their name—“amphibian” comes from a Greek word meaning “double life.” These animals are born with gills, and while some outgrow them as they transform into adults, others retain them for their entire

Why Did Marine Reptiles Die Out?

Why Did Marine Reptiles Die Out? Scientists on Tuesday attributed their extinction 94 million years ago to the combination of global warming and their own failure to evolve swiftly enough. … The study showed that large mosasaurs in fact appeared only after ichthyosaurs What killed the marine reptiles? Researchers found extra bones within a 240-million-year-old

How Do Salamander Breathe?

How Do Salamander Breathe? Most salamanders are like frogs and other amphibians: they start their lives in water , then lose their gills and grow lungs as they mature. As adults, they breathe air and live on land. Do salamander have lungs? But most, like the arboreal salamander and the California slender salamander, don’t have

Are Frogs Invertebrates?

Are Frogs Invertebrates? Animals can be further divided into two groups: Vertebrates and Invertebrates. A frog is a vertebrate. An earthworm is an invertebrate. Birds, frogs, horses are vertebrates. Are frogs invertebrates or vertebrates? Amphibians are small vertebrates that need water, or a moist environment, to survive. The species in this group include frogs, toads,