Animals communicate using signals, which can include visual; auditory, or sound-based; chemical, involving pheromones; or tactile, touch-based, cues
I believe that's is answer C because your ask about and increasment on the velocity in this observation
<h3>Answer
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Option C= ions are exchanged between two compounds.
<h3>Explanation
</h3>
A double displacement reaction, also known as a double replacement reaction or metathesis, is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products. For example,
Na2S + 2HCl → H2S + 2NaCl
Option D is incorrect because electrons are exchanged between the atoms in oxidation –reduction reactions.
Answer:
denotes the molar hydrogen ion concentration
Explanation:
Atoms can be divided more so thats not true. atoms from the same element arent all nesacarly identical because of isotopes
