Answer:
"plants release oxygen"
Explanation:
Photosynthesis is critical for the existence of the vast majority of life on earth...so we'll go with "plant release oxygen"
Answer:
Substitution Mutations
Explanation: A substitution mutation occurs when specific bases (A, T, C or G) in a gene are swapped for different ones. This type of mutation doesn't cause a difference in the number of bases like insertion or deletion mutations do. Substitution mutations just switch out one or more bases for different ones.
Hope this helps :3
Answer: I haven't seen "wolves change rivers", whatever that is, but my best guess would be "carrying capacity"
C ) as an immediate change grasshopper will start decreasing thus population will go down !!
so go with C !!