In what way do two alleles for the same trait differ? A. They are found on different chromosomes.
O B. They consist of different sequences of DNA.
C. They are complementary.
D. They are produced by two different people.

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Which greenhouse gas is emitted when burn fossil fuels for energy? a.nitrogen b.oxygen c.carbon dioxide d.helium