I think it’s all of the above.
Changing the environment would mean that traits are going to me favored, but that also means that niches also open up as a result.
I hope that helps.
Answer:
extinction and change in species competition.
Explanation:
Answer:
Capillaries connect the arteries to the veins. The arteries deliver oxygen rich blood to the capillaries, where the exchange for oxygen and carbon dioxide occurs.
Explanation:
Hope this helps!
A closed system is a system that makes no physical or chemical exchanges with its environment. Of these systems provided as choices (tree, human, clock, car), only a clock does not make exchanges with the environment, except for energy.
Therefore, of that list, only a clock would be a closed system.
Hope that helped! =)
Answer:
The second option.
Explanation:
We're trying to test the amount of bleach that has an effect on the stain so that is the altered variable.
The 2nd option uses different amounts of bleach to clean the same amount of stain.
If you choose the other options, people can argue that the bigger stain would be harder to clean with one cup of bleach, whereas the small stain gets two cups or the other way around.
It's not an effective way to see if the amount of bleach has an effect on stain removal.
