Not to quote from the source or anything but...
“Then God said, ‘I give you every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food." Doesn't say anything about munching on dead corpses for food there mate.
So, respectfully, an answer to my line of questioning keeps getting dodged because there is no logical option for the atheist/relativist to respond to it. God is needed in any consistent meta-ethical rubric as there has to be an Absolute Standard (i.e., God) outside of all personal, cultural, and societal moral norms for there to be any form of proper external judgement and/or arbitration to take place (that is, God would be necessary for supporting such claims as "eating meat is wrong for all people everywhere" etc.). So, really, if you don't believe that God exists (and that moral relativism is therefore true), then your notion that others should/ought to be vegetarian has its feet planted firmly in mid air as your opinion and the differing opinions of others would all have to be considered equally valid. (Even skeptic Immanuel Kant conceded the necessity of God as an Absolute Moral Standard for similar reasons in his "Critique of Practical Reason").
Nevertheless, if your challenge is that eating meat is not consistent with what the Bible says/teaches, then you are just plainly wrong.
At this point I will simply reference several passages on the topic (with some short commentary in brackets for the sake of clarity) and leave them here (all verses are from the ESV Bible):
Genesis 9:3 Every moving thing that lives shall be food for you. And as I gave you the green plants, I give you everything.
[Later in history, God gave certain dietary restrictions that excluded the consumption of some animals, but not all]
Leviticus 11:1-8
1 And the Lord spoke to Moses and Aaron, saying to them, 2 “Speak to the people of Israel, saying, These are the living things that you may eat among all the animals that are on the earth. 3 Whatever parts the hoof and is cloven-footed and chews the cud, among the animals, you may eat. 4 Nevertheless, among those that chew the cud or part the hoof, you shall not eat these: The camel, because it chews the cud but does not part the hoof, is unclean to you. 5 And the rock badger, because it chews the cud but does not part the hoof, is unclean to you. 6 And the hare, because it chews the cud but does not part the hoof, is unclean to you. 7 And the pig, because it parts the hoof and is cloven-footed but does not chew the cud, is unclean to you. 8 You shall not eat any of their flesh, and you shall not touch their carcasses; they are unclean to you.
[Those restrictions were for health reasons in ancient times and also as a modus to symbolically stay pure; health/symbolism being the focus of this next biblical warning to not eat meat with the blood still in it]
Leviticus 19:26 You shall not eat any flesh with the blood in it.
[As far as vegetarians, here is what the Apostle Paul had to say]
Romans 14:2 One person believes he may eat anything, while the weak person eats only vegetables.
[The context of what Paul is saying there is that of the issue of local meat that had been offered to idols; as consumption of said meat was a stumbling block for new Christian believers living in idolatrous Rome; Paul had more to say on the matter in the expanded context of the previous verse]
Romans 14:1-3 As for the one who is weak in faith, welcome him, but not to quarrel over opinions. One person believes he may eat anything, while the weak person eats only vegetables. Let not the one who eats despise the one who abstains, and let not the one who abstains pass judgment on the one who eats, for God has welcomed him. Who are you to pass judgment on the servant of another?
[The point being that Christian carnivores and vegetarians need to respectfully get along with one another without judging one another about their dietary convictions. Furthermore, note that the point of Jesus' teaching on diet was that piety was not a result of adhering to dietary restrictions/rituals]
Matthew 15:11 "It is not what goes into the mouth that defiles a person, but what comes out of the mouth; this defiles a person."
[And Jesus Himself ate fish (Luke 24:42), and even multiplied fish to feed to thousands of people (Matthew 14:13-21). Moreover, God, through a revelation to the Apostle Peter, even removed the pre-existing Old Testament dietary restrictions in The Book of Acts 10:1-11:18.]
[The ultimate point of what the Bible has to say to Christians about food is that there is liberty, not restriction. The sum of the Christian teaching being as follows]
1 Corinthians 10:31 "So, whether you eat or drink, or whatever you do, do all to the glory of God."
In summary conclusion: The Bible obviously and unequivocally supports/allows for the consumption of animals in both the Old and New Testaments. The passage you keep mis-quoting out of context (e.g., Exodus 20:13) is actually properly rendered "You shall not murder" and is reference to the sin of maliciously taking the life of another human being without just cause.
There you have it; your challenge that for a Christian to eat meat is somehow inconsistent with the Bible has been refuted, Brah.