Mrs. Williams belives that is she gives peppermints during the test that they will perform better during the next test she gives half because peppermints and half the class she does not what is the independent variable in her experiment

Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

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

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?