Answer:
Option b. is correct
Explanation:
If hydronium ion concentration 
is given then pH is given by ![-log[H_3O^+]](https://tex.z-dn.net/?f=-log%5BH_3O%5E%2B%5D)
The hydronium ion refers to the hydrogen ion in aqueous solution.
A Tomato has A Proton Concentration Of 0.00006 M
Here, 0.00006 is equal to 6 × 
So,
pH is given by - log [6 × ]
Option b. is correct
High air pressure cuz low pressure brings da rain and everybody is sad
Answer:
please give me brainlist and follow
Explanation:
Autotrophs (or producers) make their own food using light or chemical energy. Examples of autotrophs include plants, algae, and some bacteria. ... Animals, fungi, and many bacteria are heterotrophs. Specialized heterotrophs, called decomposers break down dead organic material and wastes.
Absolute Brightness
Absolute brightness represents
the total amount of energy emitted from a celestial object. It is the measure
of the true brightness of a star or other celestial object as it would be as
seen from a standard distance<span> of
exactly 10 parsecs (32.6 light-yea</span>rs). The more luminous an object, the smaller the
numerical value of its absolute magnitude or brightness.
I would go with 4 that's what makes the most sense to me, and i just learned about this last year so... I hope this helps good luck..
