Yes, people were aware that plants could drown. When crops were lost due to flooding I think it was pretty obvious.
Boyo Jim said:
Perhaps because plants grow from seeds, which can be buried, or else are encased in a hard shell and can withstand environmental turmoils before finding ground on which to grow.
Boyo Jim said:
What is sin? The definition I’m given is “separation from God”, i.e. violation of God’s commandments and instructions. Therefore, all sin is sin against God. People do not sin against other people, they only sin against God by violating God’s instructions.
Now the instructions that they violate may be in how they treat other people, and they may be wronging the other person in how they treat that person, but the sin is violating the compact with God.
So regarding animals, cruelty is a sin against God, by virtue of being cruel to the animal. Wanton destruction of plants may be a sin against God. You can’t sin against a plant, you can’t sin against a puppy, you can’t sin against your wife.
The answers depend upon your understanding of God’s commandments and instructions. My take: yes, it is a sin to kill another person’s horse, because you are destroying his property and thereby stealing. Yes, you could sin by killing a wild horse depending upon the circumstances. Killing to eat if God said it’s okay to eat horse meat, not a sin. Killing by torture for the pleasure of the torture? Definitely a sin. The Devil is in the details. 
Skammer said:
Not “obviously”. Sin is only against God. You have wronged the man by violating his marriage, you have wronged the woman by helping violate her marriage commitment, you have wronged your own spouse by violating your own marriage commitment. But the sin is only by violating God’s commandments: Thou shalt not commit adultery, Thou shalt not covet they neighbor’s ass (oh, sorry, I get confused).
Correct, but that applies not just to trees and puppies, but to your “neighbor”, the wife, etc. as well.
I disagree. From the parable of the Prodigal Son:
“But while he was still a long way off, his father saw him and was filled with compassion for him; he ran to his son, threw his arms around him and kissed him. The son said to him, ‘Father, I have sinned against heaven and against you. I am no longer worthy to be called your son.’” (Luke 15:20-21)
See also Exodus 10:16 – “Pharaoh quickly summoned Moses and Aaron and said, ‘I have sinned against the LORD your God and against you.’”
We had a dog that showed shame. Once he grabbed a duck and ran through the corn field, I hollered at him and he was gone all day long, then toward evening he came back with his tail between his legs, his head down. There were several other examples like that. and he never repeated the things he had been scolded for.
Remember, the punishment for sin was said to be death, no mention of soul or eternal punishment? Everything that is alive will die, there still is a matter of what the difference between life and soul is.
Skammar, I grant you can find examples where that language is used. I suppose it relies on how one defines “sin”.