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2 years ago

Explain why is it helpful to identify specialties and subspecialties of earth science.

2 answers:

7 0

Because Earth Sciences covers a lot of ground (pun intended) and nobody has the time or ability to do everything well and thouroughly. The field is very highly specialized in its subdivisions.

loris [4]2 years ago

5 0

Answer:

Specialities and subspecialities help us to delve deeper into the subject of earth science. It is equally important for us to understand the impacts of various areas.

Explanation:

Earth Sciences is a vast subject dealing with pollution, climate, oceans, energy resources, human impacts.

For us to act accordingly, it is essential to have a deeper look into the features.

There are specializations or subspecialities in each feature to be understood.

Scientists are working on each subspeciality to make informed decisions in order to avoid catastrophic failures and disasters as much as possible.

Disasters are unavoidable but minimizing the effects is what we can do.

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2 years ago

Mohamed and Li Jing were asked to find an explicit formula for the sequence -5\,,-25\,,-125\,,-625,...−5,−25,−125,−625,...Minus,

ANTONII [103]

Answer:

the equation is given as $a_n=-5*5^n$

Explanation:

As the sequence is given as −5,−25,−125,−625,...

From this the first term is given as

a1=-5

Now the relation between this term and the next term is to be observed.

d=a2-a1=-25-(-5)=-25+5=-20

d=a3-a2=-125-(-25)=-125+25=-100

Now it is observed that the difference is not same this indicates that the relation is not arithmetic.

next up is the geometric sequence so the value of ratio is given as

r=a2/a1=-25/-5=5

r=a3/a2=-125/-25=5

As the ratio is same this indicates, this is a geometric sequence.

Now for the geometric sequence, the value of the general term is given as

$a_n=a_1r^n$

Here a1=-5 and r=5 so the equation is given as

$a_n=-5*5^n$

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