Answer:
A and D.
Explanation:
Sharks gills are located on the side of their bodies while on the other hand, Skates have gills that are located in underneath of their mouth. In sharks , large spiracles are present on the ventral sides of shark's head whereas in Rays or Skates, spiracles are large in size and located on the dorsal side of their head. Spiracles is an external respiratory opening, located behind the eye of a cartilaginous fish.
Answer:
"distribution of traits." ... This occurs when males display certain traits that attract the female, such as peacocks fanning out tails
Explanation:
According to molecular biology, a transcript
factor also known as sequence-specific binding factor is a protein that ASSIST
the rate of transcription of genetic information from DNA to messenger RNA by
binding to a specific DNA sequence. In order for it to be expressed at
the right cell at the right time its function is to regulate genes.
<span>The temperature in the laboratory
The position of the Bunsen burner
The amount of air that mixes with the gas stream
these can all have an affect on the intensity of the reaction.
I hope I was helpful.</span>
