What cause-and-effect relationship is described in this article?

When we take a quiet walk in a forest, we help trees produce chemicals.
When we take a quiet walk in a forest, our immune system can get a boost.
When we disconnect from our senses, we are happier and healthier.
When we disconnect from our friends, our blood pressure can go up.

The cause-and-effect relationship described in this article is that when we take a quiet walk in a forest, it helps trees produce chemicals and also boosts our immune system. Additionally, disconnecting from our senses can lead to increased happiness and health, while disconnecting from our friends can result in higher blood pressure.