The correct answer is cold fronts
Answer:
lungs:
The blood first enters the right atrium.
The blood then flows through the tricuspid valve into the right ventricle.
When the heart beats, the ventricle pushes blood through the pulmonic valve into the pulmonary artery.
The pulmonary artery carries blood to the lungs where it “picks up” oxygen.
It then leaves the lungs to return to the heart through the pulmonary vein.
The blood enters the left atrium.
It drops through the mitral valve into the left ventricle.
The left ventricle then pumps blood through the aortic valve and into the aorta. The aorta is the artery that feeds the rest of the body through a system of blood vessels.
Blood returns to the heart from the body via two large blood vessels called the superior vena cava and the inferior vena cava. This blood carries little oxygen, as it is returning from the body where oxygen was used.
The vena cavas pump blood into the right atrium and the cycle begins all over again.
Answer:
Earth's second atmosphere was formed when the amount of water vapor in the atmosphere decreased, as water started condensing in liquid form.
The importance of conservation of habitats is that habitat conservation protects biodiversity in the region.
<h3>Conservation of habitats</h3>
Habitat can be defined as an environment that is made up of resources that are used by a particular organism.
There are different types of habitat which include:
These habitats needs to be conserved to maintain biodiversity which is an essential part of global food security.
Learn more about biodiversity here:
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