At which trophic level are eagles that consume fish that eat algae? a. Quaternary consumers
c. Producers
b. Secondary consumers
d. Tertiary consumers

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

Fill in the blank with the best word to complete the sentence. white blood cells protect against and aid in blood clotting when injuries are sustained.

Which of the following is not a type of epithelial cell