To test the effect of vitamin d on growth, two groups of rats were raised under identical conditions and fed the same diet. one of the groups received daily injections of vitamin d. the other group received injections of saline, which did not contain vitamin d. all the rats were weighed weekly for 2 months. in this experiment, the control was

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.

Which sequence correctly shows the path of carbon dioxide during repiration?

Asap what occurs after cytokinesis is completed at the end of meiosis 1?