I think burgess shells would be the answer
A gymnosperm is <span>a plant that has seeds unprotected by an ovary or fruit. Gymnosperms include the conifers, cycads, and ginkgo.</span>
B) the amount of available resources
Answer:
- corrosion
- bases
- 7
- It warys of how much concentration there is
- over 7
EXPLANATION:
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