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.
Answer:
B.
Explanation:
A gland in the endocrine system is made up of groups of cells that function to secrete hormones. The endocrine system works together with the nervous system to influence many aspects of human behavior, including growth, reproduction, and metabolism. And the endocrine system plays a vital role in emotions
Answer:
D and B
Explanation:
Solar cells soak up the sun which converts to chemical energy, and that's basically the way how light bulbs light up.
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