I would say letter D.
A is biology.
Ecology has to do with distribution of animals.
Answer:
<h2>14.71 g/cm³</h2>
Explanation:
The density of a substance can be found by using the formula

volume = final volume of water - initial volume of water
volume = 36.5 - 31.4 = 5.1 mL
But
1 mL = 1 cm³
5.1 mL = 5.1 cm³
From the question we have

We have the final answer as
<h3>14.71 g/cm³</h3>
Hope this helps you
5.70 g ZrF4* (1 mol ZrF4/ 167.2 g ZrF4)= 0.0341 mol ZrF4.
The final answer is 0.0341 mol ZrF4~
One.
In organic chemistry, an electrophile<span> is a reagent attracted to electrons.</span>Electrophiles<span> are positively charged or neutral species having vacant orbitals that are attracted to an electron rich centre. It participates in a chemical reaction by accepting an electron pair in order to bond to a nucleophile.
</span>
Carbon attached to O is electrophylic.