<em>Spider = invertebrates </em>
<em>horse = vertebrate </em>
<em>Caterpillar = invertebrates </em>
<em>human = vertebrate </em>
<em>eagle = vertebrate </em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>
I believe carbon dating does work to determine the age of the earth but, the answer might be <u>D</u>. Let me know if it was right.
Answer:
In science, a variable is any item, factor, or condition that can be controlled or changed
Answer:
capillary, arteries, veins
Explanation:
capillary are tiny blood vessels connecting arteries to veins