They develop on the undersides of leaves.
Answer:
common ancestor.
Explanation:
when two groups of organism are related it means they share a common ancestry but may be they are not a direct parent but can relate to there far back generation.
Evidence from fossil's records are used to study that today how much organisms have changed themselves according to the environmental changes on earth. DNA and genetic codes mainly shows the shared common ancestry.
<span>Too little is known about pre-Archean time, from the origin of Earth to 3.8 billion years ago, to divide that period into units.</span>
<span>your answer is cranial cavity </span>
Answer:
Newton's Third Law of Motion
Explanation:
Newton's third law of motion states that any object that has a force applied to will react in the opposite direction
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