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Talja [164]
2 years ago
8

The exchange of matter between natural systems and human society affects the long-term functioning of both. How does the wolf-el

k case study from Yellowstone exemplify this point?
Answer it please. Any bad answers will go by-by.

am pro.

am pro questioner.
Chemistry
1 answer:
oksian1 [2.3K]2 years ago
8 0

Answer:

Yellowstone's northern range has been the focus of debate since the 1930s. ... of ecological functions, such as the addition of organic matter to the soil ... Some studies have shown a correlation between the presence of wolves and ... will change and how those changes will affect the Yellowstone system.

Explanation:

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Which statements are true of all scientific endeavors? Check all that apply.
dybincka [34]
<span>Scientific endeavors is basically all the things that would contribute to the process of achieving a certain scientific knowledge, from the initial observation, up to the point until we can hold that certain thing as acknowledged truth.  So,

All scientific endeavors are supported by evidence.
All scientific endeavors are a systemic process.
All scientific endeavors involve observation.
All scientific endeavors involve experimentation.
All scientific endeavors involve the collection of information.

</span>
4 0
3 years ago
. Each antibody is designed to fight off how many pathogens
Alex_Xolod [135]
Antibodies can destroy pathogens by (i) binding to and blocking the pathogen's receptors, thus causing neutralization of the pathogen, (ii) binding to the pathogen and activating complement, and (iii) binding to the pathogen and facilitating its opsonization and uptake by macrophages, which utilize their Fc receptors ...
4 0
2 years ago
Formation of water: 2H2 + 1 O2 --&gt; 2H20
VLD [36.1K]

Answer:

n=15 moles H2O

1:2

x:15

x=7.5 moles of O2

3 0
2 years ago
What's ligand and how are they classified​
KATRIN_1 [288]

Explanation:

<u>Ligands:</u> In co-ordination chemistry ligands are ion, molecule or any species which donates electron pair to central metal atom.

Depending on the type of interaction Ligands are of three types.

  1. Sigma donor only
  2. sigma as well as pi donor
  3. pi acceptor ligand

let's understand each type of Ligands individually & in more detail.

1 - Sigma donor only: This is a unidirectional interaction, in which filled ligand overlaps (head to head) with central metal atom/ion & donates pair of electron in the LUMO of metal.

generally all the molecules of 2nd period without pi bond comes in this category, below are few example of sigma donor ligands,

\small \sf NH_3, H_2O, CH_3^-, H^-, R-OH, R-NH_3, etc

2- Pi donor: This in also a unidirectional interaction between ligand & central metal atom but the along with head to head overlap, side overlapping takes place.

generally protonated neutral molecules who have more than one pair to donate show such interaction, for e.g.

NH3 have two lone pair to donate but the energy level of both the lone pairs are different hence when it is neutral it only donates one pair of electron. but when NH3 is protonated to NH2- it have two electron pairs (negative charge+ lone pair) to donate & both the pairs have same energy level. example of such ligands are below,

\sf \small NH_2^-, OH^-, R-O^-, R-NH^-, F^-, Cl^-, Br^- SH^- etc

3- Pi acceptor ligand: This is a bidirectional interaction between ligand & central metal atom/ion, the filled orbital of ligand undergoes head to head to overlap with vacant orbital of central metal atom, & filled D orbital of central metal donates their pair to vacant LUMO of ligand.

depending on the LUMO pi acceptor ligands are further classified into two categories.

d\pi - \sigma*   \small \sf When  \: lumo \:  is  \: \sigma*\\ d\pi - \pi*   \small \: \sf When  \: lumo  \: is  \: \pi*

The dπ-σ* is seen in molecules of 3rd period onwards without pi bond <em>for e.g.</em>

<em>PH3,</em><em> </em><em>PR</em><em>3</em><em>,</em><em> </em><em>AsR</em><em>3</em><em> </em><em>&</em><em> </em><em>SR</em><em>2</em><em> </em><em>etc</em>

The dπ-π* is seen in molecules of 2nd or3rd period with pi bond <em>for e.g.</em>

CO C N- SC N^- etc

<em><u>Thanks for joining brainly community!</u></em>

8 0
1 year ago
The first part of a balanced chemical equation for a chemical reaction is shown below:
Bond [772]

Answer:

The answer to your question is 6

Explanation:

Data

              Cu  +  2AgNO₃   ⇒  

To find the answer, count the number of each element in the reactants

Element                Quantity

Copper                        1

Silver                           2

Nitrogen                      1

Oxygen                        6

Then, in the products, there must be 6 oxygens so in the products there must be 6 oxygens so the reaction is balanced.              

8 0
2 years ago
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