What type of pathogen is responsible for epidemics and pandemics

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

What are some possible short and long term medical concerns for crew members on longer space exploration trips

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d