The source of all energy in the pyramid in model one is the hawk
I don’t understand what u say
Cartilaginous fish do not contain any bones - their skeleton is made up of cartilage.
It refers to the cost or benefit of an activity by an economic agent for which it does not pay a price.
Fr ex: factory produces goods , it releases harmful smokes n polluts our enviroment.
In this case externality implies the negetive effect.
Hope it helped u!!
Answer:
mRNA is produced in the nucleus.
