I have a DNA sequence of
ACA TGA, and a mutation happens. The new
sequence is AAT GA. What type of mutation
was this?

deletion

Explanation:

so before the sequence was ACA TGA and then transforms to ATT GA. Clearly one is missing because the second set is only 2, but we know for sure it is deletion because after C is deleted it goes onto to ATT

1 digestive system

2 stomach

3 bladder

4 carbon deoxide

5 tiger

i think that it is plants