Positive reinforcer
<span>positive reinforcement can lead to adverse effects, and it is implicated in a range of personal and societal problems. If used inappropriately or in excess, it can change the health of a client negatively. </span>
The answer to this Question is A) nitrogen fixation
Answer:
selectively permeable
Explanation:
cell memebranes conteol the flow of butrients in and out of the cell, this meaning that they can keep some out of the cell. they SELECT what goes in and out.
the name of it is called proton :)
Not everything is one type of element. There are compounds, simple ones like water and complex ones like wood, that exist on Earth and makes life more diverse.