B. Shrimp burrow.
Explanation:
A trace fossil is a fossil left by the animal, such as a foot print or a burrow. It is not part of the actual animal.
Explanation:
When an acid is dissolved in water it forms hydrogen ions (H+) that combine with water to form the hydronium ion (H3O+) .
Answer:
I believe it is B (if you get it wrong it's my fault)
<span>The correct answer is, Alkali Metals</span>
