Which characteristic is seen in truffles but not in common mushrooms?

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

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit

Drag each label to the correct location on the chart. match the function to the type of tissue