When one plant's pollen fertilizes the egg of another plant it is called cross pollination.
Temperature, pressure, wind speed and direction, cloud coverage,precipitation and humidity
<span>The statement "the process of surveying is used by computer mapmakers to convert information into computer language." is false. This is because it does not convert the information into computer language since it just tells the direction and location of a place.</span>
After the 1st half-life 250 g of the radioactive material will be left.
<span>After the 2nd half-life 125 g of the radioactive material will be left. </span>
<span>After the 3rd half-life 62.5 g of the radioactive material will be left. </span>
<span>Therefore after 60 minutes, 3 half lives would have occurred. </span>
<span>Therefore the half-life = 60 / 3 = 20 minutes when 250 grams of the original material would have remained radioactive. </span>
<span>Therefore the answer is A) About 250 gram of the material decayed in 20 minutes.</span>
