In sickle cell anemia which of these changes? Group of answer choices

The shape of white blood cells

The shape of red blood cells

The shape of blood vessels

The shape of skin cells

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

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