How did the formation of the ozone layer contribute to the existence of life on Earth? It blocked the Sun’s harmful UV rays. It caused water vapor to cool, condense, and collect. It released large amounts of oxygen into the air. It warmed Earth’s surface, preventing materials from freezing

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

Ineed a chemical reaction takes place in which erlergy is released. arrange the reaction's characteristics in order from start to finis lower energy of reactants higher energy of products higher energy of reactants transition state sd lower energy of products

Which represents a negative impact of technology