Question

how are forests and deserts related?
forests are usually found on the outskirts of deserts.
forests and deserts have similar ecosystems.
forests and deserts both help oxygenate our atmosphere.
forests prevent desertification.
question 5
which of the following would not be considered human phenomena?
population
trade flows
topography
cities and towns

Explanation:

1. For the first question: Forests help prevent desertification by stabilizing soil, retaining moisture, and reducing wind - erosion. They are not usually found on desert outskirts, have different ecosystems, and deserts do not significantly oxygenate the atmosphere like forests.
2. For the second question: Population, trade flows, and cities/towns are human - related phenomena. Topography refers to the physical features of the Earth's surface and is a natural feature, not a human phenomenon.

Answer:

1. Forests prevent desertification.
2. Topography