Biology, 15.10.2019 23:00 golderhadashaowtatz

Match each organ or function with its body system. skin excretes waste nails kidneys bladder provides exterior barrier

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Skin: The skin acts as a barrier against external agents that could affect such as microorganisms, changes in temperature, etc.

Excretes waste: The excretion process, is done mainly by lungs (release of carbon dioxide), kidneys (elimination of excess compounds such as nitrogen) and the skin (sweat regulates temperature but also regulates the concentration of salts within the body)

Nails: It protects the soft tissues surrounding the distal phalanx, but it also exerts pressure over on the digits which allows more precission in the movements.

Kidneys: Eliminate waste from the blood and regulate body fluids, by generating urine.

Bladder: In charge of storing the urine produced by the kidneys, for the urination process to be controlled and not so frecuent.

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The scientific method is a series of steps followed by scientific investigators to answer specific questions about the natural world. it involves making observations, formulating a hypothesis, and conducting scientific experiments.the steps of the scientific method are •observation-the first step of the scientific method involves making an observation about something that interests you•question-once you've made your observation, you must formulate a question about what you have observed. •hypothesis-once you've made your observation, you must formulate a question about what you have observed. •experiment-once you've developed a hypothesis, you must design and conduct an experiment that will test it.•results-the results are where you report what happened in the experiment. •conclusion-the final step of the scientific method is developing a conclusion.i hope that this you : )

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which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements

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