Answer:
Veins leading back to the heart become larger and larger
Explanation:
Answer: option c
Sieve tubes element are use to transport sugars through out the plants.
Explanation:
Sieve tubes element are elongated and specialised living cells found in the phloem of a flowetlring plant.
They help the phloem to function very well.
Their main function is to transport carbohydrates especially sucrose in the plants. E.g transporting of sucrose from leaves to the fruits.
Answer:
Less complex.
Explanation:
Glucose is both a monomer and simple sugar.
Volcanic mountains,
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