Some animals have a well-defined skeleton and a backbone. Under which category of animals are they placed? A. vertebrates
B echinoderms
C. Invertebrates
D. arthropods

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?

Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community