A planet cell is a cell on a planet
Explanation:
<h3>Question:-</h3>
When people run long distances, their muscles require increased amounts of oxygen. Which system is responsible for carrying this oxygen to the muscles?
<h3>Answer:-</h3>
Respiratory System.
Did you Know?
Haemoglobin is the pigment of our blood to give red color.
Hope it helps ☃️
natural selection selects from among heritable differences between.
if no such differences exist, because all differences are due to the environment and thus not heritable.
