Answer:
The correct answer is - D) 1000x.
Explanation:
pH is a logarithmic scale, 1 reading change leads to the results in ten-fold in the
H+ concentration in acidity/basicity. The more H
+ ions found in solution, the more acidic the substance is as acids donate H
+ ions.
You can calculate the concentration of H
+ from the pH and the equation
p
H =
−
log
[
H
+
]
arrange again
[
H
+
] = 10
−
p
H
So for a pH of 8, we get [
H
+
] =
10
^−
8
For a pH of 5, we get [
H
+
]
=
10^
−
5
10
^−5 /10
^−
8=
10
^3
= 1000
Organic farming methods enable farmers and gardeners to prepare soil in such a way that nitrogen is added naturally through nitrogen-fixing bacteria rather than nitrogen having to be added through a synthetic fertilizer. This method of growing crops saves farmers money and alleviates the problems associated with fertilizer runoff
Farmers and gardeners should use other methods to provide crops with the nitrogen they need.
Algal blooms are due to the accumulation of algae, generally Cynabobacteria and Dinoflagellates, that grow due to excess nutrients in water.
If good algae grow, they do not accumulate in the waterbodies.
Diatom Algae are good algae.
Therefore if Diatoms are grown instead of Cyanobacteria and Dinoflagellates, there would be no accumulation and no problem of algal blooms.
The correct answer is 4. The nervous tissue is formed by various types of nerve cells that create electrical impulses but also participate in the transportation of these impulses throughout the body. These electrical impulses act as signals and carriers of information around the body. Therefore, the nervous tissue is the one responsible for signal conduction in the body.
Even if the bacteria is absent from the food, several fungi, mycotoxins, protozoa me be present in the food.
- Foods are rarely sterile and often contain natural chemical substances. They contain a diverse population of microbes that come from many sources of the natural micro flora.
- From the time of harvest to the time of preparation and consumption, microbes contaminate the food.
- A food's microflora is primarily influenced by the type of microbe, the features of the food, contamination, and the conditions during preparation and storage.
- Foods may contain bacteria, fungus, protozoa, algae, viruses, and other microbial species.
- The absence of bacteria does not guarantee that the food is safe to consume because there may still be enterotoxins, mycotoxins, fungi, and other difficult-to-identify microorganisms present.
learn more about food microflora here: brainly.com/question/15936720
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