The main purpose of lab is to perform different experiments and importance of topic is that it supports essay's thesis statement.
Explanation:
In scientific research, lab plays a vital role because they have all the materials and equipment for experimentation. lab has a control environment where infestation of harmful organisms is minimum. On the other hand, topic is an argument which is made by the writer with the reasoning.
The Marburg virus wasn't mutating this early on, therefore the Coronavirus is much more deadlier and almost impossible to get a cure for, due to the rapid change in pathogens!
If the prey is not getting enough food, they will eventually die which affects the number of predators because then the predator species would also die