<h2><em>Pros</em></h2><h2>- Oil Has Lots of Use</h2><h2>- Crude Oil Can Be Stored Easily</h2><h2>- The Oil Industry Creates Jobs</h2><h2 /><h2>Cons </h2><h2>- Oil Energy Produces Toxic Gases</h2><h2>- Oil Leaks Are Possible</h2><h2>- Drilling For Oil Is Dangerous</h2>
Answer:
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Explanation:
A molecular clock determines evolutionary relatedness by examining how many mutations or random changes in DNA, there are between two organisms. When we map the relatedness of different organisms, we are creating a phylogenetic tree. At some point, all organisms that are alive today shared a common ancestor.
Answer:
D. Nitrogen-14 has 7 electrons, 7 protons, 7 neutrons nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons
Explanation:
In an atom, number of electrons is equal to the number of protons. And the number of neutrons is equal to the difference between the mass number of the atom and the atomic number. For Nitrogen 14, electron is 7, proton is also 7 as number of electrons and number of protons are equal. So, the neutron will be 14-7= 7. For Nitrogen 15, electron number is 7 so proton number will be also 7. Neutron number for nitrogen 15 will be 15-7= 8. That's why the answer is option number 4.
The answer is B)Atmosphere
