Answer:
carbon if only one answer allowed, if check multiple, carbon, hydrogen, and oxygen.
Explanation:
The common elemental ingredients are carbon, hydrogen, and oxygen. They all contain the element carbon. They contain simpler units that are linked together making larger molecules.
Answer:
The answer is "B: They both involve duplicating chromosomes'
Explanation:
Flower because the others are a organ which make the plant live but the flower is more of a decorative thing to make the plant stand out
in a community there are people right? well in an ecosystem there are animals and organism.