4 Which of the following facts about mitochondria and chloroplasts supports the theory of endosymbiosis, leading to the evolution of eukaryotic cells?
-They are similar in size to eukaryotic cells.
-They can replicate themselves within the cell.
-They contain double-stranded DNA.
-They contain their own RNA.

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Why does miranda have that particular vision of dr hildesheim answer?

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from