If a decaying baby teeth is untreated properly without an expert's care, it may lead to permanent and serious problems in the developing permanent teeth. Which why it is advisable for parent to bring their children to their family dentist for regular check-ups to diagnose any present problems in the teeth and may be fixed right away.
<span>Because plants and animals can't make some of the nitrogen we need in order to live.</span>
Answer:
1. The need to stay afloat
2. The need to eat and avoid being eaten
Explanation: