B because in the picture underneath digital the original and copy look the same therefore there less likely to change when copied
One half-life after a radioactive isotope is incorporated into a rock there will be only half of the original radioactive parent atoms remaining and an equal number of daughter atoms will have been produced.
The transfer of antibodies from a mother to the fetus. This occurs naturally, and since it is the transfer of antibodies, it is passive immunity.
Physical structures..........
Your answer would be C: Arachnids
