I think the correct answer is A
Inside of plants, there are xylem cells that carry water and minerals from the roots, to the leaves, when the food then gets dispersed to the rest of the plant. This is similar to the human circulatory system but there isn't a heart pumping blood around. Hope this helps :)
Biosphere, Geosphere (maybe cryosphere), hydrosphere.
I'm not sure, correct me if I'm wrong.
There are three different types of observation methods for the purpose of research. These three methods include the structured observation, participant observation, and the field experiments.
The structured observation is the method of data collection which is done without the direct involvement of the researcher with the participants. the participant observation is the type of observation which is used in the experiments involving qualitative research. The field experiment is the method of observation when the experiment rules are applied in the real world.
Among the given three types of observations, the structured observation is the type of observation that is used while observing the bacteria once a week for a period of a month.
Hence, the answer is structured observation.
