Which list contains only abiotic conditions that might be found in a pond ecosystem?

Temperature of the water, dissolved oxygen in the water, dissolved minerals in the water. Bacteria, dissolved minerals in the water, temperature of the water. Dissolved oxygen in the water, fish populations, insect populations.

a. the production of carbon dioxide through the process of photosynthesis

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.