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:
Answer:
Earthquakes can affect the ecosystem in different ways. They mostly damage a lot of things on ground, but can cause massive tsunamis in sea. Earthquakes can also move land around and change the ecosystem, and carry diseases to other places.
Explanation:
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Answer:
H
Explanation:
H is the dominant allele while h is recessive.
The correct answer among the choices provided is option A. Lung capillaries are responsible for exchanging carbon dioxide for oxygen from the air. Blood that comes from the heart gets oxygen from the alveoli. The carbon dioxide in the blood goes into the alveoli at the same time.
Answer:
x= 0, y = 2
Explanation:
4x + 5y +2 = 12
Let's suppose that
x = 0
y = 2
By putting the values of x and y
4(0) + 5( 2) + 2 = 12
0 + 10 + 2 = 12
12 = 12
Hence, it is proved that x = 0 and y = 2
