Food preferences and behavior of birds can be investigated by analyzing the hour of eating habits and what type of symbiotic interactions they can establish.
<h3>What are experimental procedures?</h3>
Experimental procedures represent a step in the scientific method used to collect empirical evidence in order to test some explanation (hypothesis) of the real world.
Experimental procedures may also involve field observations which in this case allow to investigate the behavioral food habits of birds.
In conclusion, food preferences and behavior of birds can be investigated by analyzing the hour of eating habits and what type of symbiotic interactions they can establish.
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Answer:
d. Autoradiographies
Explanation:
Based on the information provided within the question it can be said that the technique that is mainly used for this are Autoradiographies. This is a technique that is mostly used for X- ray film to visualize molecules or fragments of molecules that have been radioactively but are also used for analyzing the length and number of DNA fragments using a special method called gel electrophoresis which is then used to compare the various DNA samples.
Answer:
The correct answer is option A.
Explanation:
The lymph node is a small bean-like structure that filters substances that move through the lymphatic pathway with the lymphatic fluid. Lymph nodes are present on different site in the human body. They contain white blood cells that soldiers of the human immune system and fight with infection and pathogens.
Immune system cell that is B and T cells both, not just located in the cortex only but medulla of lymph nodes.
Thus, the correct answer is option A.
The answer will be most likely C
C. The theory of plate tectonics gives the method by which continents can move as part of plates.
Plate tectonics theory shows that continents moved apart from the mass known as Pangea using tectonic plates.