The human immune system defence the body from pathogens which of the following are parts of the human immune system? a. skin, lymph nodes, white blood cells, and spleen b. mucous, urine, and kidneys c. skin, neurons , muscle cells and pancreas d. white blood cells and red blood cells

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.