The type of cloud is stratus. So the answer is b.
Is a way for a cell to give information about its activities.
This definition above refers to the geographic isolation.
It means exactly what it says in the definition - one species is left behind from the rest of the population, and it stays in that particular location, evolving and changing from the species and population it was once a part of.
I think it would be Ionic Solution
TT or Tt because even though the second letter is not dominant the first one is greater