It has a dorsal nerve chord
The change of temperature lava cools down/seconds it flows down.
Vacuole: is a cavity in the cytoplasm of a cell that contains inorganic or organic material such as fluid, food, or waste.
lysosome: are organelles that contain digestive enzymes. They digest excess or worn out organelles, food particles, and engulfed viruses or bacteria.
Mitochondria: is the "powerhouse" of the cell. They take in nutrients, break it down, and creates energy rich molecules for the cell.
cell membrane: protects the cell from its surroundings. It consists of a layer of lipid bilayer with embedded proteins.
I really hope this helps:)
Natural selection is the idea that species that acquire adaptations favorable for their environment will pass those adaptations to their offspring. Eventually, only individuals with those favorable adaptations will survive.
