The spleen is unique because it stores blood and platelets. The spleen acts mostly as a blood filter but also stores extra blood that comes in use in case of hemorrhaging in other parts of the body. the spleen removes old blood cells and recycle the iron contained in red blood cells.
Answer: Option E (B and D are the only examples.
Mediterranean ecosystem with hot dry summer and fire can be found on various continents across the globe. Plants in these ecosystem have evolve similar adaptations to survive these circumstances.
Echidnas are egg laying mammals that live in Australia and new Guinea. They are sometimes known as spiny anteaters since they are covered in spines and mostly eat ants and termites. As such they resemble south American anteaters and hedgehogs but are not closely related to them. Instead echidnas descended from an aquatic platypus like ancestor.
Explanation:
Divergent evolution is a process where different organisms with different anscetors evolve independently and develop similar traits due to their adaptation to similar environment.
Another example is the similarities between hummingbird and hummingbird moth, the evolved from different ancestors and yet posses similar characteristics.
Answer:
Two species are more related if they have a more recent common ancestor, and less related if they have a less recent common ancestor.
Explanation:
