c. because only male repoduce sperm
The oxygen atoms i believe is the answer
The region that would be eroded the most would be those at the slopes of the mountain. When heavy rainfall comes, the soil in these regions gets soften thus being forced down forming a run-off due to the force of gravity. These eroded soil would eventually continue to the valleys thus causing landslides.
The organic matter, or hydrocarbon raw material, is derived primarily from petroleum and natural gas.
Over 90% of the organic chemicals are produced from petroleum and natural gas routes nowadays. Even though the manufacturers search for alternatives because of the prices of the petroleum and natural gas, and look to replace them little by little, still these two are by far the dominant ones.
