NEED HELP BAD PLEASE HELP In what way are the humerus and the femur similar?

an x-ray of the human body showing the humerus and femur bones

A.
They both attach their respective limbs to the axial skeleton.
B.
They both have similar joints at each end.
C.
They both are extremely strong and made only of compact bone.
D.
They both have hollow spaces filled with bone-generating cells.
E.
They both protect vital organs.

Which is required for sexual fissiondiploid cell productionmeiosis

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

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos