Sport fishing does very little if any damage to the ecosystem. Unregulated commercial fishing can deplete fish stocks.
Very effective methods of fishing, which remove a large portion of a specific species all in the same go, can upset the ecosystem.
two examples of an dynamic eqilibrium of an ecosystem may be upset
people will increase so that there will be overcrowding.
The species that were kept in control by the predators start over populating and upset the balance of the ecosystem
many mammals rely on fish for food
The American alligator, gray wolf and gopher tortoise are all examples of keystone species. The loss of a keystone species will upset the balance of an ecosystem.
It is an adjective used to describe something which is harmless (friendly) to the ecosystem, and it will not upset the balance of nature. Many companies are using this term in advertising their products to consumers who care about the environment.
upset: "I was upset." "He was upset." "He and I were both upset." "I upset him." ect
Wolves are the top predators. When you remove them you upset the balance of the ecosystem. Wolves serve a fital part in the ecosystem. They control the population of their prey. Without control the population would grow too large.
Children may be upset about the hole in the tree being filled with cement because they see it as an act that harms nature and disrupts the ecosystem. They may feel a sense of loss for the habitat that was destroyed, and they may also be upset that a part of their playground or natural environment has been altered in a way that feels disrespectful to the natural world.
The past tense of "upset" is "upset." For example, "She was upset by the news."
The comparative of upset is more upset; the superlative is most upset.