Why do scientists arrange the organisms on the tree below with some organisms closer than others?

A) The organisms that are closest to one another are the same organisms
B) The organisms that are closest to one another evolved from each other
C) The organisms that are closest to one another share the most similar DNA
D) The organisms that are closest to one another share the most similar RNA

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 equation is used to calculate the magnetic force on a charge moving in a magnetic field

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box