This blood enters the <u>Right atrium</u>, <u>right ventricle</u> and then moves down. The presence of the <u>valves</u> prevents the backflow of blood inside the heart.
<u>EXPLANATION:</u>
The blood that contains water materials and is poor in oxygen content is brought by the blood vessels to the right atrium or the upper chamber of the heart.
The blood then moves via the tricuspid valves to the right ventricles or the lower chamber. The presence of valves prevents the blood from flowing back. The valves also control the amount of blood flow in the heart.
These sanctuaries are places that emulate conditions met in natural habitats that are long gone and thus the animals that live in them have a place to live freely and survive.
Heredity can be defined as a biological process that involves the passing on of characters or traits from parents to their offsprings genetically. These traits can be physical for example, height, colour of eyes or mental for example, intelligence.
