With multiple lines on a graph you can compare different sets of data easier
Answer:
Its transmitting bacteria and pathogens from object to object that would not normally meet up
Explanation:
also its practically a breeding ground for dangerous diseases, with all the rotting animal bodies, many of them exotic, and not fit for consumption
Answer:
Agricultural technicians make sure these products are safe for humans, other animals, and the environment.
Explanation:
- Agriculture technicians are involved in the research that includes the effects of insecticides and other things we apply to crops into the ecosystem or environment.
- As herbicides, fungicides, and insecticides are the chemical use to the crops that can effect humans, plants or animals with a bad impression.
- So all these risk calculation and its consequences are studied by the agriculture technicians.
Answer:
Alfred Hershey and Martha Chase
Explanation:
In 1952 Alfred Hershey and Martha Chase were working with bacteriophages or phages, which are viruses that infect bacteria. They knew that a phage had an outer shell of protein and an inner core of DNA. In addition, from the electron microscope observations, they also knew that during infection the virus attacks the bacterium by its tails and introduces its genetic material into the bacterium to multiply using its metabolic machinery. They radioactively labeled two sets of phages: one with 32P (which marks only DNA) and another with 35S (which marks only proteins). In two parallel experiments, they infected bacteria with viruses marked on their DNA and with viruses marked on their proteins. The cultures were shaken with a mixer to separate the virus particles from the bacterial coatings. They then performed a centrifugation to separate the phages from the bacteria, so that the larger and heavier bacteria remain in the pellet, while the phages remain in the supernatant. They found that the radioactivity of 35S appeared in the supernatant while that of 32P appeared in the sediment, from which new radioactively labeled virus particles appeared, demonstrating that DNA was the genetic material.
