Answer:
pioneer species
Explanation:
Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier. The first inhabitants are lichens or plants—those that can survive in such an environment. Over hundreds of years these “pioneer species” convert the rock into soil that can support plants.
Answer:
Thymine
Explanation:
Nitrogen base found in DNA not RNA
"Have a good day." - Nahiku
Answer:
Fluorine is a chemical element with symbol F and atomic number 9. Classified as a halogen, Fluorine is a gas at room temperature.
symbols are abbreviations used in chemistry for chemical element
Explanation: