Which algebraic expression represents “the class was divided into four equal groups”?

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit