Do animals in the phylum Cnidaria have backbones

What's the difference between the cardiovascular system and lymphatic system

The classical laboratory experiments performed by urey and miller to explore the necessary conditions for the production of organic molecules (the building blocks of living things) in the solar system involved the passing of electrical discharges

Which statement best explains the importance of nerve cells. Nerve cells are used to send messages from different parts of the body to the brain. Nerve cells are important in order for growth of an organism.

The most Damage caused by nuclear power has been related to A) Long-Lasting radioactive nuclear pellets B) Global warming due to the release of carbon dioxide C) acid rain from the release of steam D) Explosions in radioactive leaks caused by

What can you conclude about the life cycle of a plant? All plants will live till old age. Not all plants live till old age Plants will die after producing its first fruit. Each plant species have predetermined number of year to live

Whats a hitchhiking arachnid?

What would mostly likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time

Scientists use a standardized taxonomic system to separate organisms into hierarchical groups based on similarities and differences in their structural and genetic characteristics Which of the following best explains why a standardized

What happens to atoms after an animal has died?

If an organism has high biological fitness in one environment, does that mean it would also have high biological fitness in another environment? Why or why not