I don’t understand this question
Answer:
D.
Explanation:
the term natural selection is how evolution takes place
Isotopes of an element all have the same chemical behavior, but the unstable isotopes undergo spontaneous decay during which they emit radiation and achieve a stable state. This property of radioisotopes is useful in food preservation, archaeological dating of artifacts and medical diagnosis and treatment.
Answer:
Brittle stars eat decaying plant matter (they are detrivores) and plankton, but can also kill small animals to eat as well.
Explanation:
They do this by pushing their stomach out through their mouth, like most starfish. Hope this helps.
