The answer is Permian-Triassic extinction.
The Permian-Triassic extinction was 252 million years ago. It is known as The Great Dying because about 95% of all species died out due to environmental changes (volcanic eruptions, dry climate, melting of ice sheets, etc). This is also the only event in which many insect species wiped out.
I think it's electric force. Not 100% sure but I hope it's right.
Explanation:
Bohr model is able to explain the electromagnetic spectrum produced by different atoms of different elements. This is because an electron around the nucleus of an atom occupies distinct orbital levels around the nucleus and not in between. When an electron absorbs a specific wavelength of electromagnetic spectrum it 'hops' to an upper electron energy level equivalent to this wavelength of radiation. When the atom 'hops' to a lower orbital level it releases ta specific wavelength of radiation that is equivalent to the difference in the energy levels. This was unaccounted for in the Rutherford's planetary model.
The electron cloud model is thought to be an improvement on the Bohr model because it accounts for the Heisenberg Uncertainty Principle which stipulates that it is impossible to ascertain the momentum and location of an electron at the same time (because merely viewing an electron using light -or any kind of radiation - will change its direction and velocity). This model explains the likely position of an electron using probabilistic equations. The electron cloud model can therefore be used to explain bonding between atoms.
Learn More:
For more on atomic theories check out;
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Answer:
Question contains 6 statements.
1. a substitution of G to U at position +13 in the sense strand
2. a transition at position +12 in the antisense strand
3. a transversion of C in the sense strand of the histidine codon
4. a G nucleotide is inserted after position +1 in the antisense strand
5. a deletion of the A at position +7 in the antisense strand
6. an insertion of A between positions +7 and +8 on the sense stands
Among these only 2 statements are correct.
Below are the correct statements.
Explanation:
2. a transition at position +12 in the antisense strand
5. a deletion of the A at position +7 in the antisense strand
Unlike ionic bonds, covalent bonds involve the sharing of electrons between atoms.
- - Final answer: <span>b. sharing of electrons between atoms.</span>
