Yes, most of the Baja is desert. It is covered by part of the Sonoran Desert.
The Arabian Peninsula is almost entirely desert.
A nebulous question: The Mexican state of Baja California bounds the United States on the northern side against the states of California (150 miles approx) and Arizona (<40miles) and the Mexican state of Sonora. The boundary between Baja California and the US is an international border with restricted crossings north and south bound. Most of this border area is open desert and rugged terrain. The west side of the peninsula is bounded by the Pacific Ocean and the east side of the peninsula has the Sea of Cortez or Gulfo de California. The peninsula is made up of two Mexican states Baja California in the northern half and Baja California Sur in the southern half. Baja California Sur only borders the northern state of Baja California near the town of Guerrero Negro and the Cedros Islands.
Desert.
No, Korea has no deserts.
About 33 percent of the land area of the earth is desert.
Australia is made of land, it is a continent. Most of Australia is dry desert land.
Peninsulas are made over time from the weather and earth changes. A hurricane or earthquake for example could cause a body of land to become a peninsula.
The northern half of the lower peninsula and much of the upper peninsula are made up of rolling hills and woodlands. Much of the central portion of the lower peninsula is flat farm land.
Saudi Arabia is mostly desert with very little arable land.
New Zealand Baja Guitar amps are made in Christchurch.
about 30 percent
Deserts and Lowlands