The first entirely terrestrial vertebrate class totally independent from the aquatic habitat is the class reptilia.
Answer: Option D.
A region of DNA consisting of the promoter and operator sequences needed to regulate one or more structural genes.
Explanation:
An operon is a part of the the DNA that is found in bacteria or viruses which function in transcription and genetic regulation. Operon is under control of an operator, consist of promoter, regulator and structural genes. Operon is normally under the control of a single operator in which genes coding for protein are clustered along the DNA.
<span>Because the chloroplasts that actually photosynthesize are found in the tops of the onions - the part that is actually above ground. There's no reason for there to be chlorophyll in the onion skin itself because these grow underground :)</span>
Trawling is a method of fishing that involves pulling a fishing net through the water behind one or more boats. The net that is used for trawling is called a trawl.
Some ecological damages associated with trawling are ,the weight and width of a bottom trawl can destroy large areas of seafloor habitats that give marine species food and shelter. Such habitat destructions can leave the marine ecosystem permanently damaged.
A= smooth, skeletal, cardiac.
