Answer:
A volcano
Explanation:
Is a vent or fissure in the Earth's surface through which molten rock and gases are expelled. Molten rock is called magma.
Answer:
Abiotic
Explanation:
They aren't a living organism so it's abiotic I assume.
A. Hormones
secreted directly into the blood
Answer:
Using statistics!
Explanation:
If the predecessors had genetically transmitted disease,or specific features,the family tree is useful in identification and better understanding.