Answer:
The pericardium is the most outer layer of the heart. Main function to protect the heart from external forces/entry.
Answer:
genes are part of the DNA that contain traits from ur biological parents that basically make u who u r
I'm not sure if there are answer choices, but water is an excellent solvent, taking along valuable nutrients with it when it travels.
The best evidence of such phenomena could be a population's genetic variation decrease.
When a population bottleneck occur it means that for some reason (i.e. environmental events) the size of a population is largely reduced. This leads to reduction of the genetic variation in that new smaller population. When a bottleneck occur, the founder effect is normally seen, which is that one population is established by a small group of a previously larger population leading once again the genetic variation, now though with a bigger population, to be very reduced.
