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posledela
3 years ago
14

What is main difference between fresh water & ocean water ecosystem?

Biology
1 answer:
IrinaVladis [17]3 years ago
5 0

Answer:

I think it might be A. I'm not sure.

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Two equal forces F have resultant of 1.5F .Find the angle between the forces​
Grace [21]

Answer:

Angle between the forces​ = 82.82 degrees

Explanation:

The resultant force value = 1.5  times of Force F

|R| = |F1| = |F2| =|F|

Where R is the resultant force

R^2 = A^2 + B^2 + 2AB cos X\\(1.5F)^2 = F^2 + F^2 + 2F^2 cos X\\2.25F^2 = 2F^2 + 2F^2 cos X\\

Cos X is the angle between the two forces.

On further simplifying the equation we get

2.25F^2 = 2F^2(1 + cos X)

(1 + cos X) = \frac{2.25F^2}{2F^2} \\(1 + cos X) = \frac{2.25}{2} \\(1 + cos X) = 1.125\\cos X = 1.125 - 1\\Cos X = 0.125\\X  = Cos^{-1}0.125\\

X = 82.82 degrees

Angle between the forces​ = 82.82 degrees

3 0
3 years ago
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Unequal sharing of electrons between atoms
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Answer:

A <u><em>polar covalent bond</em></u> is a covalent bond in which the atoms have an unequal attraction for electrons and so the sharing is unequal. In a polar covalent bond, sometimes simply called a polar bond, the distribution of electrons around the molecule is no longer symmetrical.

Explanation:

<em>Hope This Helps!</em>

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3 years ago
what is it called when the lead male and female are given preferential treatment to resources such as food and potential mates?​
lakkis [162]

Answer:

Dominance Hierarchy

Explanation:

Dominance hierarchy is when the lead male and female are given preferential treatment to resources such as food and potential mates.

Dominance hierarchy forms as a way for animals to coexist in an environment where threats are constant and resources like food, water, mates, and shelter are limited. As a group, members in the dominance hierarchy have access to more resources than they could obtain as individuals and can better defend their territory from threats.

I hope this helps

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3 years ago
How is most of the electricity in the United States generated?
Kitty [74]

Explanation:

Production. According to the U.S. Energy Information Administration, most of the nation's electricity was generated by natural gas, coal, and nuclear energy in 2018. Electricity is also produced from renewable sources such as hydropower, biomass, wind, geothermal, and solar power.

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