I think the correct answer would be HIV infections. Vaccines of such infection are recently discovered and there are already trials done to a number of people. With the aid of this, there would surely be a decrease in the number of people who would have HIV.
Because there is insufficient evidence to support the idea that all chimpanzees use tools. the scientist would need lots of hard evidence supporting this conclusion (lots of chimpanzees using tools)
Answer:
oxygen, carbon, hydrogen,
Explanation:
Hope this helps :D (I know a few are missing sry <3)
I believe the most appropriate is a selective medium and differential medium. Selective medium types are formulated to support the growth of one group of organism, but inhibit the growth of another. Blood agar is a differential medium that distinguishes bacterial species by their ability to break down the red blood cells included in the media. Blood agar is often used to distinguish between the different species of pathogenic streptococcus bacteria.