Answer:
- The six essential nutrients are vitamins, minerals, protein, fats, water, and carbohydrates.
-The digestive system converts the foods we eat into their simplest forms, like glucose, amino acids or fatty acids.
- The function of the excretory system to remove wastes from the body.
-The organs of the urinary system include the kidneys, renal pelvis, ureters, bladder and urethra.
-The excretory system works with the endocrine system to help maintain homeostasis. Chemical messengers called hormones signal the kidneys to filter more or less water or salt, depending on the levels of water and salt in the body.
Explanation:
Answer:
Cerebral Nuclei.
Explanation:
Cerebral nuclei refers to one of three components of the cerebrum. It is a composite structure of the end-brain defined on the basis of origin from the ventricular ridge of the embryonic Encephalon. It is a lusters of gray matter that contain neuron cell bodies and lie within masses of white matter.
Answer:
El componente gaseoso que faltaba en la atmósfera primitiva y que hoy es esencial para la vida es:
- <u>El oxigeno</u>
Explanation:
Se tiene constancia de que en sus inicios, la atmósfera de la Tierra estaba compuesta por los gases resultantes de las diferentes erupciones volcánicas (ya que la actividad volcánica de dicha era fue demasiado alta), por lo tanto, era normal tener una atmósfera compuesta por azufre, dióxido de carbono, nitrógeno (que hoy en día es más del 70% del aire que respiramos) e incluso agua en estado gaseoso, sin embargo, <u>la presencia del oxígeno </u><u> era sumamente baja, casi inexistente</u>, actualmente su presencia en el aire es de un poco más del 20% y <u>es sumamente importante para diferentes funciones en los seres vivos, incluso los seres vivos acuáticos que se abastecen del oxígeno disuelto en el agua</u>, esta es la razón por la cual, si tienes una pecera con peces en tu casa, debes instalarle un sistema que abastezca de oxígeno constantemente a tu peces mascota.
<span>Platyhelminthes phylum. This phylum is known for its flatworms, like planaria, tapeworms and flukes, that later being completely parasitic.</span>
Answer:
Bedrock
is most likely found in Dhorizon.
Explanation:
In R horizon Bedrock material is most likely to be found. The parallel layer to the surface of the Earth is known as the Soil Horizon. It is different from other layers of Earth’s surface in terms of chemical, biological and physical characteristics.
Among the all soil profiles r horizon is mainly known for composition of hard rock masses. It is a layer which has partially withered or completely un-withered rocks at its base. It is similar to the parent material.