Answer:
B) He must pull back on the sled with more force than the puppy is pulling forward with
Explanation:
Answer:
respiratory and excretory systems are among the two vital systems in our body which work in order to maintain our health or keep our body fit
Explanation:
Respiratory systems comprises of organs like lungs to inhale oxygen and exhale carbon dioxide out of our body. The oxygen is then mixed with blood by the heart and reaches different parts of our body.
Excretory system is responsible for excreting or expelling the waste out of our body to keep our body free from toxins and harmful chemicals.
excretory system works with respiratory system to get rid of water vapors and carbon dioxide in the human body.
Answer:
B
Explanation:
Brain/nervous system in charge of everything
True, maria are dark, smooth, <em>flat </em>surfaces on the moon.
hope this helps:)
The answer would be “A cancer cell” i believe.
