The four main spheres of the exterior of Earth are the _____.

2 answers:

5 0

Biosphere: All living things

Lithosphere: The crust and outer mantle of Earth

Atmosphere: The air and gasses that surround Earth

Hydrosphere: All water on Earth

Maru [420]3 years ago

3 0

The atmoshere is air,the hydrosphere is water,lithosphere is land,and biosphere is living things

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The given question says that b species diverged around 60,000 year ago from species a. Since the divergence, they have a nucleotide difference of 15 nucleotide.

We need to find out the nucleotide difference in another 240,000 year, which means a total of 300,000 year since divergence.

The nucleotide difference in 60,000 years = 15 nucleotide.

The nucleotide difference in 1 year = $\frac{15}{60,000}$ nucleotide.

The nucleotide difference in 300,000 years = $\frac{15}{60,000}\times 300,000$ nucleotide.

The nucleotide difference in 300,000 years = 75 nucleotide.

Hence, after another 240,000 years or 300,000 years since divergence, the species and species b would show a difference of 75 nucleotide.

In another 240,000 years, there would be 60 nucleotide difference, as 15 of the nucleotide are already different in initial 60,000 years from the total of 75 nucleotide difference in 300,000 years. So, 60 (75-15) nucleotide difference would be observed in next 240,000 years.

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1. what is the amount of the bolus dose, in both milligrams and milliliters, that you will administer in the first minute?
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