<span>Both a and b, conduction happens between collision of molecules while convection is transfer of heat between liquids.
</span>Conduction and convection along with radiation...for radiation see the theory of photo electric effect and Compton effect...
Answer:
<em>This phenomenon occurred due to natural selection and evolution.</em>
Explanation:
Natural selection tends to favour organisms carrying the alleles which provide better traits to live in an environment. Evolution tends to change the allele frequency of a species with time depending on the adaptations which are more perfect to survive in an environment.
In the past, blue frogs lived in lakes. The colour of the lake matched with the colour of the frogs. As a result, these frogs could escape from their predators and hence were better adapted to survive in such an environment.
When the lake dried, the blue frogs were not adapted to live in the muddy environment as their colour no longer helped them to escape from the predators. As a result, natural selection favoured those organisms carrying brown colour and evolution changed the allele frequencies and increased the number of brown frogs.
Answer:
Violent explosions from the Sun's magnetic field that release energy are Solar flares.
Explanation:
The method used here is agarose gel elecrtrophoresis in which DNA ladder is used which is a set of standard used to determine the size of DNA used .The DNA ladder is put adjacent to the DNA fragments to be visualized Suppose if the ladder shows 300 basepair so the DNA adjacent to this number will be of this size.These are the set standards used to determine the size of DNA or RNA. For a range we can take 2% of agrarose to run DNA fragments upto 500 Basepair. Most of the amplified DNA falls into this category size.
