Answer:
Explanation:
In a lake, oxygenic phototrophs produce new organic material as well as O₂. If primary production rates are very high, the resultant excessive organic matter production can lead to bottom-water O₂ depletion from respiration and the development of anoxic conditions. This in turn stimulates anaerobic metabolisms, including anaerobic respirations and fermentations.
Organic matter that is not consumed in surface layers sinks to the depths and is decomposed by anaerobes.
Answer:
D 2 million years is the answer
Explanation:
The correct answer is "conditioned taste aversions".
Conditioned Taste Aversions is best described as an event wherein it occurs whilst<span> an animal </span>friends<span> the </span>flavor<span> of a </span>certain food<span> with </span>symptoms resulting from<span> a </span>poisonous<span>, spoiled, or </span>toxic <span>substance. </span>normally<span>, </span>taste<span> aversion is </span>developed<span> after ingestion of </span>food<span> that </span>reasons<span> nausea, </span>illness<span>, or vomiting.</span>
Answer:
At least 17 PCR cycles or 16 PCR cycles
Explanation:
As we know -
In one chain of heating and cooling of polymerase chain reaction (PCR), the strands of DNA gets doubled.
The general mathematical representation of this is
where "n" is the number of PCR cycles.
It is given that DNA strands to be produced is 16 times the original quantity of DNA.
So the PCR cycle must be carried out at least 17 times in order to have DNA strand not less than 16 times the original quantity of DNA
Answer: signals fair weather and an approaching cold front
A student notices cirrus clouds characterized by long, thin, wispy strands of clouds in the sky. It generally appears white or light grey in color and signals fair weather and an approaching rain or cold front.
