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AlladinOne [14]
3 years ago
12

Scientists were able to determine the age of the earth from rock samples that were analyzed.

Biology
1 answer:
Igoryamba3 years ago
4 0
B. Radiometric Dating
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A windmill stores power in a generator, the generator transfers electricity to the TV in your home. ______----->______-----&g
sertanlavr [38]

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electrical energy

The generator, in turn, converts the mechanical (kinetic) energy of the rotor to electrical energy.

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Why is it impossible to understand the totality of the interactions among the organisms in the biosphere?
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In order to understand the totality of the interactions among the organisms in the biosphere, we need to at least understand <span>how the all genes function within organisms and </span>interact<span> with others organism and environment around it.
If we try to make this effort in a world where organisms will keep evolving and environment will keep changing like us, that tasks is impossible to finish.</span>
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A man with blood type B and a woman with blood type O produce an offspring.
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3 years ago
What are biofilms, how do they form, and how can biofilms complicate treatment of infectious diseases?
Elis [28]

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<u>Biofilms are</u> defined as complex communities of microorganisms that grow embedded in a self-produced polymeric organic matrix and adhered to a living or inert surface, and that can present a single microbial species or a range of different species

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The bacteria that form the biofilm are in what is called sessile form, exhibiting a phenotype different from those of the same cells in unicellular or free form (planktonic form) with respect to the growth rate and gene transcription (Donlan, 2002 ).

<u> The formation</u> of biofilms is an adaptive strategy of microorganisms, since growth in biofilm offers four important advantages: (I) protects microorganisms from the action of adverse agents, (II) increases the availability of nutrients for their growth, (III) facilitates the use of water, reducing the possibility of dehydration and (IV) enables the transfer of genetic material (DNA). All of these circumstances can increase your survival capabilities. As a consequence, <u>the usual methods of disinfection or the use of antibiotics are often ineffective against biofilm bacteria</u>.

In addition to the risk of contamination, the development of biofilms can interfere with different processes and cause damage to the equipment. In drinking water systems the formation of biofilms can obstruct the pipes reducing their speed and transport capacity causing an increase in energy consumption. The formation of biofilm in heat exchangers and cooling towers can reduce heat transfer and as a consequence its efficiency in the process. The formation of persistent biofilms on metal surfaces can cause corrosion due to acid production by bacteria.

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The flap of cartilage that covers the opening of the larynx is the
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Epiglottis is the flap of cartilage that covers the opening of the larynx

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