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
Answer:
Nitrogen is taken up by plant roots and combined into organic substances in the plant, such as enzymes, proteins and chlorophyll. ... Plants use the nitrogen in the soil to grow. People and animals eat the plants; then animal and plant residues return nitrogen to the soil again, completing the cycle.
Explanation:
<span>The nurse should advice the parent on how they can quickly administer first aid because the distance between the home of the child and the hospital might be far and anything can happen before the child gets to the hospital for proper medical attention. Firstly, the parent should make sure that the item that might have lead to the poisoning far from the child and encourage the child to spit it out or have such items removed by using finger. The parent need to show the item to the doctors when she gets to the hospital so that the right diagnosis can be sort for immediately. The parent should however not force the child to vomit as this might lead to complications . If the child is not breathing the parent should patiently wait for emergency help from 911 to arrive</span>
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