Answer:
i'm pretty sure it's the endoplasmic reticulum
Explanation:
The respiratory system and the circulatory system.
The respiratory is involved when you breath and intake oxygen into your body. It goes into your lungs and into alveoli located in your lungs. When the oxygen is there it gets absorbed into the bloodstream and the circulatory system transports it around your body to deliver the oxygen.
Answer:
Dolphins and Whales if I'm not mistaken I think I heard they are magnetosensitive
Answer:
it's a muscle
Your heart is actually a muscular organ. An organ is a group of tissues that work together to perform a specific function. In the case of your heart, this function is pumping blood throughout your body. Additionally, the heart is largely made up of a type of muscle tissue called cardiac muscle.