Preserved footprints left behind by animals are called ichnites.
Answer:
Meanwhile, your bones are busy making new blood cells. Working together, these systems maintain internal stability and balance, otherwise known as homeostasis. Disease in one body system can disrupt homeostasis and cause trouble in other body systems.
Explanation:
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Since Lithium has one valence electron that means it needs to lose it to form a stable structure. That means it's valence is equal to one. Oxygen has six atoms, in order to form a stable octet structure it needs to accept 2 electrons, therefore it's valence is 2.
Therefore two Lithium atoms bond with one oxygen atom to form Li2O
Animal cells do not have a cell wall or chloroplasts but plant cells do. This is just one example there are several ways. <span />
D. an arctic fox is brown in summer and white in winter
