Answer:
Screen door
Explanation:
Because it holds things out but let air in.
It regulates on/off like a light switch
R-selected species often experience EXPONENTIAL growth in population, giving a J-SHAPED curve on a graph.
R-selected species are those that have high growth rate. These species may produce many offspring but not all will survive into adulthood.
Answer: I think it's herbivore
Explanation:
