Question

Which of the following characteristics of living things best explains why birds fly south for the winter

a
Living things maintain internal balance
b
Living things are based on universal genetic code
c
Living things are made up of unites called cells
d
Living things respond to their environment

Answer 1

D

Living things respond to their enviroment.
It's just what they do and how they grew up!
Hope that helped:)

Answer 2

D. Living things respond to their environment

Step-by-step explanation:

The Arctic winter is a season that presents a challenge for many animals. Due to the low temperatures and lack of food, some bird species have developed migration behaviors to the south in search of food and warmer temperatures. Therefore migration is a response to their environment.