WILL GIVE BRAINLIEST ANSWER TO FIRST ACTUAL ANSWRR white blood cells help protect the human body from desease, this is an example of which two body systems?

a) muscular system and digestive system

b) muscular system and immune system

c) circulatory system and digestive system

d) circulatory system and immune system

Water changes bacteria in the soil converts this nutrient into a usable form. plants take up the usable nutrient through the soil and assimilate it into proteins, making it part of the plant. an animal eats the plants, and the nutrient becomes part of the animal. when the animal dies, it decomposes, returning the nutrient back to the soil. which cycle is being described? water cycle carbon cycle nitrogen cycle phosphorous cycle