Answer:
Variability was seen as imperfection, so natural selection could only eliminate the inferior and imperfect, not giving rise to new things, new species.
:
This contributes because their lifestyle revolves around food, and if they live near different areas, they will have to search for different types of food.
Answer:
Since sea urchins are picky, they are used as indicator organisms in public aquariums to determine if the system is functioning properly. This is because they are very "picky" about water quality. If the water is contaminated, the sea urchins will be the first to show signs of stress, spines laying down or falling off. Do use an aquarium filter and do clean up the day after feeding. Any metal exposed to the seawater will corrode and poison the tank. A dying sea urchin will often spawn out and rot out, causing the others in the tank to spawn and die as welll.
Explanation:
Hello,
Here is your answer:
The proper answer to this question is option A "Repairing leaky faucets". That's because a water conversation technique is how you can preserve water without wasting to much. B, C, and D your using a lot of water.
Your answer is A.
If you need anymore help feel free to ask me!
Hope this helps!
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