Answer:
help the digestive system break down food quickly
Answer:The cardiovascular system consists of the heart, blood vessels, and blood. This system has three main functions: Transport of nutrients, oxygen, and hormones to cells throughout the body and removal of metabolic wastes (carbon dioxide, nitrogenous wastes).
Explanation:i hope that helped
Explanation:
three new organisms ,x,y and z were discovered by a group of zoologists they observed that organisms x and y depend on organisms z for food . organisms z does not depend on oraganisms for food . oraganisms x is the . only one that can move on its own
Answer:
La recesión provoca un aumento en el gasto público del gobierno para hacer que la economía flote hasta que haya estabilidad. Esta es una característica común en la economía y, como tal, ayuda a amortiguar el efecto de una recesión. Se perderán muchos empleos, aumentando así los niveles de desempleo. Por lo tanto, el gobierno tiene que gastar más para ayudar a los afectados a sobrevivir.
Explanation:
Una alta tasa de desempleo y las malas condiciones económicas llevan al gobierno a un mayor gasto durante el tiempo de recesión. El propósito es ayudar a estimular la economía y ayudarla a sobrevivir las dificultades económicas. Un ejemplo típico es el paquete de estímulo de Obama en los Estados Unidos de América en 2009 en respuesta a la gran recesión.
Answer:
The correct answer is: geography and UV radiation.
Explanation:
Skin variation occurred thanks to evolution, and was driven as a consequence of the geographical location of different populations of humans.
The humans that lived in hot and sunny places, closer to the equator, where much more exposed to the sun's ultraviolet radiation. In order to survive the amount of UV lights that they were exposed to, new humans in those regions were being born with a darker skin tone, which was rich in melanin (a brown pigment that protects us from the sun radiation).
Contrary to these humans that lived in the tropical areas, the humans that populated the areas that were closer to the poles, developed much lighter skin as a result of lower amounts of melanin in their skin. Since sun exposure in the poles is very limited, humans needed to receive as much as they could for the production of Vitamin D, and thus, their skins got lighter and less protected.