a, b, c, and d hope it helps :))
The circulatory system - hemoglobin in the blood transports oxygen :)
The ovary of a flower in a plant is where it produces seeds and develops fruits
Answer:
The answer is c
Explanation:
the the immune system protects the body against harmful pathogens by producing special proteins called antibodies.
Answer:
Option D
Explanation:
Bits of DNA that are interspersed among these repeated sequences are called spacers. Regarding to bacteria, the spacers are taken from viruses that previously attacked the organism. They serve as a bank of memories, which enables bacteria to recognize the viruses and fight against future attacks.
