The left ventricle is responsible for pumping oxygenated blood throughout the entire body, which requires a lot of work and pressure, hence why it is super thick.
The answer is “Variation that decrease reproductive success are more likely to be passed on.”
Humidity. I think you need to work on your grammar a little bit pal, if you ever need help with ELA homework, hmu.
This question has a two part answer. The first part is that an asteroid hitting the earth and the second part is massive volcanoes erupting around the world.
