1. mother to fetus 2. through exposure to the antigen (virus, toxins, or cancer cells).
Emigrated means they exited so due to the high amounts of pollution all the animals left which cause a population decrease
Answer: It would us valine
Explanation:
The spinal cord and the brain make up the central nervous system, and spinal cord nerves carry most messages between the brain and the rest of the body.
The vagus nerve carries the signal from the brain to the heart.
Answer: A chromosome is a long DNA molecule with part or all of the genetic material of an organism. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not
Explanation: