All other things being equal, the size of a population will decrease if

every single other thing being equal,the size of a populace will diminish if demise rates surpasses birth rates.  

Explanation:

Important terms in the investigation of populace incorporate populace science, populace environment, populace measure, populace bottleneck, populace decrease, and so forth. A populace alludes to a gathering of living beings of an animal varieties that interbreed and live in a similar place at an equivalent time. They are fit for interbreeding or generation. Populace science alludes to the natural investigation of creature populaces.

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.