Answer:
Vaccines take a long time to develop and make.
Explanation:
The cure (vaccines) to problems like smallpox take a while to develop as scientists and doctors need to make it correctly and test it correctly to see if it is a cure or not. It takes years before these things can be distributed and/or even verified for "it works!" Due to this, it may of took a century for development, planning, making, testing, getting approved and mass distributing.
Answer:
The answer is AAG. Hope this helps
Explanation: Mutations are silent. It is called a silent mutation
B disturbances to habitat
A gradient graph (derivative) representing the state of a dynamic equilibrium in a population should be a constantly straight (horizontal linear) line. Option 1 shows a increase which means it hasn't reached dynamic equilibrium. Option 2's average at all times is a constant number, which it fluctuates to maintain equilibrium. Option 3 shows a generally increasing trend, meaning the population is not balanced. Option 4 is plainly something that doesn't make sense as it is all over the place.
As the data points on Option 2 fluctuate around a certain value, it can be seen that Option 2 is the graph representing the state of a dynamic equilibium in the population.
Carnivores (animals that eat other animals/humans for food)