Answer:
Must be spread through human actions alone
Explanation:
Cause it's the only one that isn't true.
Answer:
some sort of water system, (a river/groundwater/purification plant ect.)
Explanation:
Answer:
The red blood cells will shrink in size when water diffuses out of them.
Mutation. A mistake made while DNA copies which causes changes in DNA
The tick attaching itself to the skin of the dog is the parasitic relationship because the tick is relying on the dog as a host in order to live.
