Yes, as scientists could figure out what might have changed in the variables she used. Brainliest me and I can give you the whole system.
B. Group number
For example, Sodium(Na) is in Group 1 and Na^+ has a charge of +1.
<span>"D.how living things are interconnected with their environment</span>" is the correct answer. Ecology has to do with systems of environments as a whole, and the organisms that live there.
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.