I think B. I hope this helps.
Answer:
I believe the answer is "C. When your cells need more oxygen."
Please mark brainliest, if right. Thanks :)
Answer:
The skeletal system provides a frame to
support and protect the body and allows the
body to move.
Answer:
scientist has brought together all the research on the subject and found that, from bees to birds to wolves, many animals have an ability to process and represent numbers arguably a form of counting.
Explanation: What's more, the new study suggests that this mathematical prowess helps animals stay alive in a brutal world. Such a finding extends our knowledge of animal cognition, a field that has grown exponentially in recent years.
Diffusion is the movement of substances from high to low concentration
osmosis is the diffusion of water through a semipermeable membrane from high to low water concentration
