scientists believe that the early universe started with only two elements, hydrogen and helium
true
or
false

After hydrogen and oxygen, witch element makes up almost all of the most common substance in your body

Describe pasteur’s results and how they disprove spontaneous generation.

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium