B, if it ever went to zero they would be extinct and they repopulated over time so you know it got close but never hit zero
Answer:
Answer
Explanation:
water is a polar solvent, water has the ability to ionize molecules, which is necessary for life, water has high specific heat.
I might be concerned about the milk because it has been modified, but If the cow is completely healthy, than the milk should be fine, too. My only concerns would be if the genetic modifying might effect the milk in a strange way.
An autotroph produces its own food while a hetertroph has to find it/hunt for it/gather it
Examples~
Autotroph-Sunflower
Heterotroph-Wolf
