A primary air pollutant is directly from the source and secondary pollutants are omitted from two or more different primary pollutants interact with each other in the atmosphere.
EX of primary: carbon monoxide, nitrogen oxide, sulfur oxid
EX of secondary: NO2 acid rain
The red algae was the plant group that includes the Ancestors of plants.
Precipitation, soil, temperature, humidity, and altitude
The chromosomes migrate to the equator of the spindle apparatus, they line up in the middle. meta means middle
Answer:
any of numerous complex proteins that are produced by living cells and catalyze specific biochemical reactions at body temperatures