Which of the following is a main function of the circulatory system? A.
To break down nutrients into a simpler form
B.
To transport oxygen to tissues throughout the body
C.
To send signals to the nervous system
D.
To produce hormones for reproduction

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

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

The basic types of tissue in the human body are