Answer:The immune system protects your child's body from outside invaders, such as bacteria, viruses, fungi, and toxins (chemicals produced by microbes). It is made up of different organs, cells, and proteins that work together.
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Your answer is D. Because the Earth rotating on it's axis causes Day and Night
I will think it’s B.... hope it helps!
Answer:
relationships among organisms and evolutionary relationships for organisms with a shared common ancestor.