How do some protozoans respond to adverse environmental conditions?

Protozoans are organisms usually made up a single cell and are all microscopic. All protozoans are eukaryotes. They have different responses when faced with adverse or unfavorable environmental conditions. Examples include:

Amoeba: During adverse environmental  conditions, many amoeba undergo encystment that is they become cysts. The amoeba becomes circular, loses most of its water and secretes a thick membrane that serves as a protective covering. When the environment is again suitable, the covering of the cyst ruptures and the amoeba emerges. 

Bacteria: In unfavorable environmental conditions some bacteria such as clostridium form spores, specifically endospores. An endospore is  an extremely resistant, tough, dormant, non reproductive  cell structure that can  withstand desiccation, extreme temperatures, chemical disinfectants and starvation. The bacteria survive in this mode until better growth conditions return

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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