Its because a long spine cacti can reproduce more because it has more survival capacity than the short spine cacti and because of this reason the short spine cacti cannot protect it self because it has a shorter spine that could protect itself from danger.
B because a new species adds more diversity to your ecosystem
Usually the y-axis stands for dependent variable while the x-axis stands for independent variable. And the curve stands for the relationship between the two variables. The control variable and measurement variable often means the independent variables.
The gravitational force between two rolling balls depends on their masses and which other factor?
Answer: C) Their separation "100% sure
Good luck and Have a nice Benevolent Day! :)
