Concretions im pretty sure because they are in a <span>spherical shape</span>
Those are called minerals
Hey here is the answer,
It is a globular protein, it contains one iron atom, that can bind one oxygen molecule. Therefore it has high affinity for oxygen.
Hope this helps you...
Answer:
Independent Variable: Give one group the drug and dont give the other group the drug
Dependent Variable:The data of if the drug improves the rats memory(if their memory is better, the same, or made worse)
Cold dry air sinks below the warm wet air and it pushed upwards
Letter (A.)
