Cine poate completa aici in manualul de biologie cl IVDupă activitatea în decursul celor 24 de ore, deosebim organisme … şi … . Organismele … sunt acele ce activează ziua, pe când organismele … activează noaptea. Dintre animalele … fac parte liliecii, … , iar din plantele nocturne – … . Apariţia animalelor nocturne se datorează următorilor trei factori: … , … , … .

Explanation:

The animals that remain active during the day are called the diurnal while animals that remain active during night are called the nocturnal.

As per the question we can distinguish organisms and plants and see their behavior during the day as well as during night. Diurnal are organisms that activate during the day, while the organisms that activate during the night are called the nocturnal.  Among the animals, nocturnal animals are bats, mouse, hedgehog, etc. The appearance of the nocturnal animals is due to the following three factors :

-- to avoid heat

-- to hunt

-- to mate

haploid cells;

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.