Explain the reasons why scientists are reconsidering evolutionary relationships between animals such as arthropods and nematodes.

Which best describes carbon dioxide’s path out of the body

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred