The statement that deforestation kills many organisms that produce oxygen is not entirely accurate. While it's true that forests are significant oxygen producers, they are not the only source of oxygen on Earth.

If all the forests were somehow destroyed, several types of oxygen-producing organisms would remain, including:

- Phytoplankton: Microscopic algae that live in oceans, lakes, and other bodies of water. They are responsible for producing a large portion of the Earth's oxygen through photosynthesis.

-Grasslands: Grasslands, which cover vast areas of the Earth's surface, also contribute to oxygen production through the process of photosynthesis.

-Other plants: Plants other than trees, such as shrubs, bushes, and mosses, also produce oxygen through photosynthesis.

-Oceans: The world's oceans absorb vast amounts of carbon dioxide and produce oxygen through the process of ocean-atmosphere exchange.

It's important to recognize that while forests play a crucial role in maintaining the Earth's oxygen balance, they are not the exclusive oxygen suppliers. In the event of complete deforestation, other oxygen-producing organisms would continue to contribute significantly to the planet's oxygen supply.