Because of the moral degradation of the human beings, the whole creation suffers! Imagine this as a man looking in the mirror, the planet and all the creation on it, is a reflexion of the man's heart!

For example, many times the land and animals suffered because Israel failure to love God and worship no other gods.

Only after the Mankind be brought to the [original] state of perfection via Jesus and his Kingdom of 1,000 years; the Mankind will receive the glorius freedom of the children of God [a pure heart naturally inclined to God's will]; the planet and the creation on it will stop to suffering!

Genesis 2:7
Then the LORD God formed a man FROM THE DUST OF THE GROUND and breathed into his nostrils the breath of life, and the man became a living being

Genesis 3:17
To Adam he said, "Because you listened to your wife and ate fruit from the tree about which I commanded you, 'You must not eat from it,' "CURSED IS THE GROUND BECAUSE OF YOU; through painful toil you will eat food from it all the days of your life.

Matthew 6:9-10
9 So then, this is how you should pray: ‘Our Father in heaven, hallowed be Your name,
10 YOUR KINGDOM COME, YOUR WILL BE DONE, ON EARTH AS IT IS IN HEAVEN.

Romans 8:20-22
20 For THE CREATION WAS SUBJECTED TO FRUSTRATION, not by its own choice, but by the will of the one who subjected it, in hope
21 that THE CREATION ITSELF WILL BE LIBERATED FROM ITS BONDAGE TO DECAY and brought into the freedom and glory of the children of God.
22 We know that the whole creation has been groaning as in the pains of childbirth right up to the present time.