Hi, just to clarify, are you asking what are five causes that effect population?
Answer:
Global warming is the long-term warming of the planet’s overall temperature. Though this warming trend has been going on for a long time, its pace has significantly increased in the last hundred years due to the burning of fossil fuels. As the human population has increased, so has the volume of fossil fuels burned. Earth has experienced climate change in the past without help from humanity. But the current climatic warming is occurring much more rapidly than past warming events.
The heart begins very early in mesoderm within the trilaminar embryonic disc. The heart forms initially in the embryonic disc as a simple paired tube inside the forming pericardial cavity, which when the disc folds, gets carried into the correct anatomical position in the chest cavity.
Answer:
E. Vasoconstriction.
Explanation:
Vasoconstriction is narrowing or constriction of the blood vessels. It happens when smooth muscles in blood vessel walls tighten. This makes the blood vessel opening smaller. Vasoconstriction may also be called vasospasm.
Vasoconstriction is a normal process. It helps keep your body in healthy balance.
Vasoconstriction may occur to:
stabilize blood pressure or raise blood pressure
reduce loss of body heat in cold temperatures
control how blood is distributed throughout your body
send more nutrients and oxygen to organs that need them
protect your body against blood and fluid loss
