The finches had all descended from a common ancestor but their beaks had changed over time as the ones that were better at eating the food on their islands ate more food and were more likely to survive and pass on their superior beak to their offspring.
First of all, we must understand what we are looking for. We know that producers are basically organisms which make their own food. Therefor some examples are:
1) Algae (creates its own food using energy from the sun)
2) Plants (creates its own food using energy from the sun)
3) Phytoplankton
I hope this helps!
Hyothalamus is the thermostat of the human body
Number one is sex cells are created
