Answer:
A. Mutualism
Explanation:
Mutualism is a type symbiotic relationship which involves an ecological interaction or association between organisms of different species in which each specie benefit from each other. Sometimes, both of the species depend on each other for survival.
In this scenario, the bird benefits (food) from the mammal by eating the insects off the mammal body while the mammal also benefits because it gets rid of blood sucking insects which are harmful to them.
<span>Grid
The cathode serves as the positive terminal and the anode as the negative terminal. The flow of electrons is from the cathode to the anode.</span><span>The relationship between a cathode and an anode involves electrons. An example of this is reaction that takes place in an electrolytic cell. It has a cathode compartment, an anode compartment and a salt bridge that divides the compartment. The movement of electrons is from the cathode to the anode. </span>
Ok let me explain the procedure to you:
The buffer solution is like this:
pH = pKa + log [salt]/[acid]
4 = 4.20 + log [salt] / [acid]
-0.20 = log [salt]/[acid]
If you <span>Solve for [salt]/[acid]
This gives ratio of moles.
</span><span>Take amount of acid be x L and then amount of salt will be 0.1-x
Now molarity*volume=number of moles
</span>I know that with this you will be able to get to the result. Hope this helps