Hemoglobin serves as a chemical messenger
Answer:
Explanation:
Organisms are well preserved in mud because mud has high water holding capacity. It retains water and does not allow oxygen flow which can destroy the remains of organisms. There are some microbes that preserved whose growth are enhanced in water related environment like mud.
But sand cannot retain or hold water. It drains it off and all oxygen bearing water to flow which enhance decay compared to mud. It can't preserve organisms because of the above reasons.
Answer is A. It cant be B because they are to close together and it cant be C because some of the seeds are also to close together. Hope this helps!! :)
Answer: Blue because of google lol