Answer: a. skin, lymph nodes, white blood cells, and spleen
Explanation:
The human immune system involves various components and organs which protects the body against the disease causing organisms. Among the given options skin, lymph nodes, white blood cells, and spleen is the correct option. This is due to the following facts:
Skin: It forms the outer covering layer of the human body which prevents the entry of the pathogens inside the body.
Lymph nodes: The lymph nodes are the parts of the lymphatic system. It consists of lymphocytes which fights against disease causing pathogens.
White blood cells: The white blood cells are the cells of the immune system which also fights against invading pathogens.
Spleen: The spleen is the spongy soft organ of the human body. It is located in the upper left part of the abdomen. It filters blood as a part of the immune system. The old blood cells as well as the intruding microbes are degraded inside the spleen this way spleen provides the immunity to the body.
Answer:
I believe that the answer to this and your question is going to be: (A) skin, lymph nodes, white blood cells, and spleen.
Let me know if i got it right because it was right on my test.
Answer: pressure changes
Weathering is a natural phenomena in which the rocks are broken down into small pieces or sediments. It is caused by weathering agents such as wind, water, chemical, pressure and temperature.
Pressure changes is the weathering agent which would cause rocks to be pushed to the earth's surface where they often crack or break. The pressure could be applied by the superficial rocks or any other denser object.
The Zooxantelae and the hard coral are in a mutualistic relationship. This means that both the hard coral and the algae benefit from this relationship. The coral gets extra nutrients produced by the photosynthesizing algae, and the algae gets protection and a stable environment by living inside the coral tissue.
The case of the remora and the manta ray is a perfect example of commensalism. In this type of relationship, one of the participants has benefits, and the other participant has no benefits, nor costs. The remora gets ''leftovers'' from the manta ray, and possible protection from larger predators and the manta ray does not benefit from this relationship.
The tiger shark prays on the green sea turtle, so this is a clear example of predation.
The trevallies and the dolphins are both apex predators, therefore they are competing against each other for pray.
Lymphocyte (Cell B)
Explanation