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gogolik [260]
3 years ago
7

What does primary productivity measure?

Biology
2 answers:
Goshia [24]3 years ago
7 0
It measures the total rate at which photosynthesis or chemosynthesis happens in a system.
vagabundo [1.1K]3 years ago
3 0

Answer:

Primary productivity is defined as the rate of conversion of photosynthetic and chemo-synthetic energy by the autotrophs into the organic substances.  It is affected by the temperature, light, availability of nutrients and some other factors. It measures photosynthetic productivity.

It is important because it forms the basis of the food web in the ecosystem. It can be measured by the rate of sugar formation, the rate of oxygen production and by the amount of carbon dioxide consumed.




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Liam notices that his phone battery is depleting faster than he remembers it should. he suspects that running certain apps on hi
saw5 [17]

Yes, this could be the possible reason for the draining up of phone's battery faster than normal.

What is battery?

One or more electrochemical cells with external connections for powering electrical equipment make up an electric battery, which is a source of electric power. A battery's positive terminal serves as the cathode and its negative terminal serves as the anode when it is supplying electricity.

Numerous apps will undoubtedly take up a lot of storage on your cellphone. Let's say you have 60–70 apps, and 18–25 of them require routine synchronization for updates and notifications.

Therefore, even after you have closed all of the apps, they continue to run in the background to notify the feeds. Additionally, background updates use both data and battery.

Therefore, more apps mean more instances of background updating and running. And as a result, it will use battery power proportionally.

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4 0
1 year ago
Madison is experiencing symptoms of paralysis after eating food contaminated by
snow_lady [41]

The consumption of the food contaminated with botulin can make a person experience the symptoms of paralysis. The <em>Clostridium botulinum</em> bacteria produces this toxin, which is also known as botox. It is a neurotoxin which prevents the release of the acetylcholine, which is a neurotransmitter.

Hence, the answer is 'botulin or botox'.

6 0
4 years ago
The pH is a measure of the concentration of the hydrogen ion (H+) in water. Highly acidic water has a very high H+ concentration
LUCKY_DIMON [66]

The hydrogen ion concentration of the following pH samples is as follows:

  • 7 (a neutral solution) = 0.845
  • 5.6 (unpolluted rainwater) = 0.748
  • 3.7 (first acid rain sample in North America) = 0.568

<h3>How to calculate hydrogen ion concentration (H+)?</h3>

The pH is a measure of the concentration of the hydrogen ion (H+) in water. This means that a relationship exists between H+ and pH of a solution.

The mathematical relationship between pH and H+ concentration ([H+]) is as follows:

pH = –log [H+]

This means that the hydrogen ion concentration (H+) of the following pH values can be calculated thus:

  • log 7 (a neutral solution) = 0.845
  • log 5.6 (unpolluted rainwater) = 0.748
  • log 3.7 (first acid rain sample in North America) = 0.568

Learn more about pH at: brainly.com/question/15289741

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3 0
2 years ago
Producers, such as those that make the foods that are shown below, make glucose during the process of photosynthesis. A produce
gogolik [260]

in chloroplasts

Explanation:

8 0
3 years ago
Read 2 more answers
Scientists seeking to determine which molecule is responsible for the transmission of characteristics from one generation to the
worty [1.4K]
A) DNA fulfils all three conditions:
<span>(1) copy itself precisely - in the process of replication, DNA copies itself and two molecules of DNA are formed. This process is very precise thanks to the great number of proteins involved in these process that prevents error occurring and proteins that can fix the error if it occurs.
(2) be stable but able to be changed - DNA is very stable molecule otherwise, it cannot be a genetic material. However, its chains can separate in a short length so the translational machinery can attach to it and the process of transcription can occur. Also, in crossing over, during meiosis, </span>the exchange of genetic material occurs and chromosomes change a bit.<span>
(3) be complex enough to determine the organism’s phenotype - it contains a number of genes responsible for different traits. All of this results in the </span>organism’s phenotype.


B) DNA copies itself. <span>Meselson and Stahl conducted the experiments on DNA replication in which they used </span>E. coli<span> bacteria as a model system. After they labelled all bacteria's DNA with heavy 15N by using medium with heavy 15N, they switched bacteria to medium with light 14N. After several generations, all bacteria's DNA was labelled with light 14N. This experiment evidenced that the self-replication of DNA is semi-conservative process.</span>
5 0
4 years ago
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