When was the last time the United States and Mexico fought a war? O A. 1903 to 1904 O B. 1939 to 1940 O C. 1846 to 1848 D. 1800 to 1804​

It is 1846 to 1848

Explanation:

Hope it helps

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.