Approximately 99% of the microbes in the intestines are obligate anaerobes. we have plenty of blood vessels that can bring oxygen to the tissues of the intestines. why would there be obligate anaerobes within these areas? a. the bacteria in the intestines are protected from exposure to the oxygen in the tissues by the lining of the intestines. b. the bacteria consume all the oxygen in the tissue areas brought by the blood vessels, creating an anaerobic environment. c. while the blood vessels supply oxygen to the tissues of the intestines, the inner area where the bacteria reside is not supplied with blood/oxygen. since it's deep within our bodies, there's no chance for oxygen to get into these inner areas of the intestinal tube, creating a highly anaerobic environment. d. the aerobic microbes are outcompeted for nutrients in these areas by the anaerobic microbes.

The diagram below represents a marine food web and a process that can harm the human population. each circle represents an organism and the smaller dots inside them represent a toxic substance. what is being represented and how does it harm the population? the diagram represents biological half-life, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents biomagnification, in which toxins build up in organisms higher up on the food chain, and this can negatively impact humans who consume the organisms and the toxic substance. the diagram represents the process by which different organisms prey upon each other; this can impact the human population by reducing the number of organisms that do not contain the toxin. the diagram represents the way that toxins are metabolized by living organisms, with those at greater trophic levels able to metabolize more efficiently than those at lower levels. this means that those at higher tropic levels are safer for humans to consume compared to the organisms at lower trophic levels.

If water is at -10 ° c and energy is added to the water until it is 50 ° c while maintaining a constant pressure of 760 mmhg, describe the phase change of the water?

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?