Answer:
The nucleus at the central part of the cheek cell contains DNA. When a drop of methylene blue is introduced, the nucleus is stained, which makes it stand out and be clearly seen under the microscope.
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I believe the correct answer is D. <span>ears pinned back, eyes averted or lowered, and lips pulled back and down.
When dogs are afraid, their ears are lowered to show fear because of something they may have done wrong. They are also scared or embarrassed to look at their owner because they know they will receive some sort of punishment. Their tail is also usually tucked between their legs to show they are afraid.
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1. formaldehyde
2. paradichlorobenzene
3. tobacco smoke
4. toronto smog
5. pesticides
Hadean is the first eon of precambrian, and took place around 4.6 and 4.0 billion years ago.
Answer:
i believe its troposphere
Explanation:
yes
