It is common for system companies to buy from local suppliers as it lowers the latency in the response of the supply chain.

FORBES: Fragility and Recovery of Digital Storage Supply Chains

The consequences stretch from one end of the food chain to the other, as higher food prices prompt a response.

ECONOMIST: No matter how bad things get, people still need to eat

The climate in the North Atlantic shifts naturally over the decades, and it is probably in response to such shifts that the sink is currently changing, though the chain of cause and effect is obscure.

ECONOMIST: Climate change: What lies beneath | The