Answer:
A. The blood goes back to the heart to get oxygen.
Answer:
When the starfish have been removed experimentally, the mussel populations have expanded rapidly and covered the rocky intertidal shores so exclusively that other species cannot establish themselves.
Explanation:
Answer I think the number 1
Diversification Rates Increase With Population Size and Resource Concentration in an Unstructured Habitat
Answer:
plantcell
Explanation:
because plant cell have central vaccole choloroplasts and plastids which are essentially visible organelles
