Answer: X=1
Step-by-step explanation:
Please see picture for steps
If the number is 5 or greater you round it up
if its four or less you round down
Answer:

Step-by-step explanation:




Answer:
A change in a species that helps it survive
Step-by-step explanation:
i took life science in 7th grade, and another word for this is a mutation (kinda... pls dont make me go there...)