There all correct...........
Answer:
Explanation:
Native trees have better disease and pest resistance, but how a tree is planted and the site that it is planted in can affect its overall health. Trees that become diseased are often attacked by insects (pests). This is because the disease weakens the tree's defenses, making it vulnerable to infestation by pests.
Answer:
Core.
Explanation:
The core is magnetic and is the cause of the Poles and the magnetosphere.