The <span>intrusions in the rock layers would be H and J.
</span>Intrusions are formed by crystallization of magma infiltrations inside the Earth's crust. These intrusions happen as magma ascends slowly from within the Earth penetrating any space or fissure that it can find. Because this process is so slow, as pressure is released and temperature decreases, magma solidifies and crystallizes into solid intrusive rocks. They are usually the "layers" that brake through others and appear across several other layers in a different orientation than those.
The answer is ribosomes. Ribosomes produce proteins for the cell.
blood type B could have a genotype of either BB or BO.
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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.
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