Answer:
Your respiratory system is the network of organs and tissues that help you breathe. This system helps your body absorb oxygen from the air so your organs can work. It also cleans waste gases, such as carbon dioxide, from your blood. Common problems include allergies, diseases or infections.
An example of force that acts at distance is gravity and an example of contact force is pushing a chair across the room
Gene (DNA) expression would be B
Answer:
B) The chromatids of each chromosome are separated.