1. What was the question the scientists were trying to answer? 2. Is the question testable through an experiment? Why or why not?

3. Why did the scientists want to research this topic?

4. What was the hypothesis?

5. What were the steps of the experiment the scientists used to answer their question?

6. What two groups of fiddler crabs did the scientists use to make comparisons about the effects of oil spills on fiddler crabs?

7. What was the conclusion of the experiment?

8. Was there enough data to support the conclusion? Explain.

9. How does this information help us understand the impact of oil spills on marine life?

10. Why was this experiment important to study?

11. How can the information from this research be used in the future?

12. Was this experiment a creative way to study how oil spills affect marine life? Why or why not?

This is the text to answer these questions copy and paste it onto google to access it https://sciencejournalforkids. org/wp-content/uploads/2019/09/fidd ler_crab_article. pdf

Explanation:

Ahypothesis is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories.

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.