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.
<span>An amphibian that lacks lungs and breathes entirely through its skin would have to be smaller than an amphibian with lungs so that the small oxygen intake correlates with
the small surface area of the amphibian. This would then allow it to breath efficiently.</span>
Answer:
two guard cells
Explanation:
Stomata are the pores found on the surface of leaves and some stems. They are formed from two guard cells (bean-shaped cells) joined at their ends, forming a pore.
