Why are most food chains limited to 3 to 5 trophic levels?
What is a recessive trait?
Biomedical scientists study species as different as worms, fruit flies, mice, zebrafish, or rhesus
monkeys to understand human genes and how they lead to diseases. Why?
Because rhesus monkeys gave us the Rh+ factor when they bit our ancestors.
Because they make up an interconnected food web when bacteria are added.
Because these species have many inherited features that are very similar to