What is the chemical reaction that results when a pair of amino acids are chemically combined?
(1)ch4
(2)h2o
(3)hn3
(4)co2

Are substances released into the environment that in excess amounts cause damage

Average annual precipitation and are the two major features that define the biomes on earth.

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