1. mineral-rich water, heated by newly formed oceanic crust, escapes through cracks in the ocean floor called a. nodules b. hydro thermal trenches c. hydro thermal vents d. rifts 2. which is not a drawback to obtaining energy resources from the ocean floor? a. oil spills b. breakdown of gas hydrates at the surface c. trace amounts of resources d. effects on marine habitats 3. the topography of the ocean floor a. is uniformly hilly b. is as diverse as that of the continents c. is smooth and flat d. cannot be mapped like the continents 4. a submersible is used to a. measure sound waves in even back-and-forth patterns b. conduct deep-sea research c. transport cargo to ships d. attract water toward elevated areas on the ocean floor 5. which forms at mid-ocean ridges? a. island arcs b. deep-sea trenches c. guyots d. new ocean floor

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.

Witch type of microscope is used to view very small cell components like proteins and dna?

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?