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jeka94
3 years ago
13

Discuss what trophic level humans occupy on an ecological pyramid, and explain what happens to contaminants and environmental po

llution (such as mercury) as you move down and up the ecological pyramid (what is this called?)
Chemistry
1 answer:
givi [52]3 years ago
4 0
Humans technically occupy the Tertiary level, as Humans are considered to be at the top of the food chain. As contaminates move up the pyramid it's called "biomagnification", as the concentration of contaminate in ppm increases; and as it move down, the concentration of contaminate decreases.
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What type of ion do elements from each of the following groups form ,<br> group1 <br> group 7.
Artemon [7]

Answer:

group 1 - cations charge +1

group 7 - anions  charge -1

Explanation:

Group 1 has one valence electron and will lose one electron to complete the octet.

Group 7 has 7 valence electrons and will accept an electron to complete the octet.

7 0
3 years ago
Which physical method can separate a mixture of steel ball bearings and marbles?
Gnoma [55]
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5 0
4 years ago
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Two objects of equal mass have a force of gravity of 6 N between them. Imagine the mass of one is cut in half and the other stay
Alenkasestr [34]

Answer:

F' = 3 N

Explanation:

Given that,

Two objects of equal mass have a force of gravity of 6 N between them.

If the mass of one is cut in half and the other stays the same such that,

m₁' = m₁ and m₂' = (m₂/2)

We need to find the new force. The gravitational force between two objects is given by :

F=G\dfrac{m_1m_2}{r^2}

We have, F = 6 N

New force,

F'=G\dfrac{m_1'm_2'}{r^2}\\\\F'=\dfrac{Gm_1\times \dfrac{m_1}{2}}{r^2}\\\\=\dfrac{1}{2}\times \dfrac{Gm_1m_2}{r^2}\\\\F'=\dfrac{F}{2}\\\\F'=\dfrac{6}{2}\\\\F'=3\ N

So, the new force becomes 3 N.

3 0
3 years ago
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vfiekz [6]

Answer:

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The base unit of measurement of liquids and volume.
Gemiola [76]

Answer:

Liters

Explanation:

3 0
4 years ago
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