A. He should add shells that are different colors, but the same size and type, to the tank and observe which shells the hermit crabs choose.
Durning an experiment you need to keep everything the same but only change the certain things based on your theory.
Such as how the student wanted to see if the color attracted the crab. If he had changed the size and type of the shell then the crab would have chosen the bigger one as they tend to grow into larger shells.
Answer:HIV finds the white blood cells, called CD4 cells. HIV gets inside the CD4 cell and makes copies of itself. Then, HIV kills the CD4 cell and the new HIV copies find other CD4 cells to get inside and start the cycle again. HIV kills immune system cells that help the body fight infections and diseases.
Explanation:
Answer: Because
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Answer:
What Are the Benefits and Risks of the Procedure? Dr. ...
How Much of the Tumor Will Be Removed? ...
What Will Be the Next Steps After Surgery? ...
What Clinical Trials Are Going on That Might Be a Good Fit? ...
What Should I Expect Down the Line Regarding My Treatment and Health?
Explanation:
I believe this is T. Because i just learned that in science not that long ago, and deciduous forests have small winters and long growing seasons, and the small winters have lots of snow, and the long growing seasons have lots of rain.
