Answer:
21
Explanation:
there are supposed to be 2 chromosomes, not 3. This person has down syndrome.
They are called cotyledons
Answer:
Fossil fuels are produced by the same geological processes.
Explanation:
Fossil fuels form when organic matter which has been buried in the Earth over a long period of time is subjected to heat and pressure over a long period of time. Heat and pressure are both critical components for the formation of a fossil fuel. The process of the formation of fossil fuel is the same today as it was in the past. The geological processes are the same for the formation of fossils.
<span>Answer: Cellular differentiation is responsible for one daughter cell becoming a sieve tube whereas the other becomes a companion cell. Cell differentiation occurs as different genes are switched on and off.
Hope this answer helps!</span>
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:
