The Precambrian time refers to the time 4.5 billion to 542 millions year ago. This period is characterized by having reduced atmosphere and included reduced compounds. Scientists believed that atmosphere at that time was devoid of free oxygen and CO2 was present in excess. Before the complex life evolved on the Earth, the Precambrian Earth's ocean contained dissolved carbon dioxide.
The white blood cell identifies the toxin produced by the pathogen and creates antibodies to fight the pathogen
Well, . .
Let's divide the gallon into 4 Quarts.
if 1 part cleaner need to be mixed every 3 parts of water, it's means that you need about 1/4 gallon of cleaning solution
hope this helps
Soil research has shown that soil profiles are influenced by five separate, yet interacting, factors: parent material, climate, topography, organisms, and time. Soil scientists call these the factors of soil formation
