Which of the following describes the fundamental difference between prokaryotic and eukaryotic cells? a. prokaryotic cells do not have a true nucleus or membrane-bound organelles. b. eukaryotic cells are the only type of cells that can possess a cell wall. c. prokaryotic cells are all viruses and rely on the infection of a host cell to replicate. d. eukaryotic cells are only found in protists, bacteria, and viruses.

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.

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material