In Gen 1:30 we see that God has given to all living things (plants excluded) permission to eat from every green herb (plant life). This excludes the Tree of the Knowledge of Good and Evil (Gen. 2:17) Remember, there was no death or blood shed at this time, so no people or animals were eating anything that was alive (that is, anything with blood in it). Plants and fruits were used as the only source of food. After the fall of man, sin entered the world and animals began to eat other animals. Blood was shed and death occurred. We find fossils of fish in the process of eating other fish, so this shows that before the great flood, animals were eating each other. Most likely, people were eating animals as well, but God did not give permission for animal consumption until after the flood (Gen 9:3).
Some may ask why dinosaurs have sharp teeth if they did not use them to eat meat. That is a reasonable question, but the presence of sharp teeth do not require that an animal eats meat. Sharp teeth are needed for tearing certain plants and opening certain fruits. Pandas have sharp teeth but they only eat bamboo and vegetation. Bears have sharp teeth but some bears are strictly vegetarian. Some species of bats eat fruit, nectar, insects, small animals, and blood, but you could not determine this by the shape of their teeth.
Also known as “Original Sin,” the Fall of Man was the event of Adam disobeying God. It is not known at what time this occurred, but it had to be after the 7th day of Creation when God declared everything to be “very good” (there was no sin if everything was “very good”). Genesis Chapter 3 records Adam and Eve residing in the Garden where God placed them. God gave them permission to eat from every tree in the garden except one: the Tree of the Knowledge of Good and Evil. This was a literal tree that bore fruit. Satan, in the form of a serpent, questioned Eve about what God had commanded her regarding that particular tree. Eve replied that she would die if she ate from it. Satan said that she would not die but instead be like God and her eyes would be opened, allowing her to know good and evil. Deceived, Eve ate some of the fruit and shared it with Adam. Immediately after, they both realized that they were naked and they tried to cover their nakedness with leaves.
Both Adam and Eve knew that it was wrong to eat from that particular tree, yet they still did it. They had the option of walking away from the tree and eating something else. Even still today, when we are tempted, God provides us with an escape route so that we can avoid the temptation (1 Cor. 10:13). Their act of rebellion resulted in banishment from the garden, and all people would be born with a sin nature and one day die. We all suffer because of Adam’s sin. Thankfully, Jesus has provided a way to live forever with Him.