Answer:
air
Explanation: without air you can cant even live
Answer:
11)El ciclo del agua, conocido científicamente como ciclo hidrológico, se refiere al intercambio continuo de agua en la hidrosfera, entre la atmósfera, el agua del suelo, la superficie, el agua subterránea y las plantas. La ciencia que estudia el ciclo hidrológico es la hidrología.
12)Sabems que las etapas del ciclo hidrológico son las siguientes:
Evaporación
Condensación
Precipitación.
Las implicaciones que tienen para la vida cada una de las etapas son:
Evaporación, se reduce el nivel de los ríos, los lagos pequeños se seca, y se eleva la temperatura del ambiente.
Condensación, Es el proceso en el cual se forman las nubes, por lo que la luz solar disminuye.
Precipitación, produce nuevamente el aumento de los niveles de rios y lagos, y la disminución de la temperatura.
Explanation:
Meiosis is the process of cell division by which involving gametes. Cell division is just the same for sperm and egg cells, but they have distinguishable descriptions and labels in the process. Spermatogenesis is for the males’ sperm cells and oogenesis is the process for females’ egg cells. The cell division of meiosis involves the two phases, respectively meiosis I and meiosis II. Meiosis I like mitosis is the cell division that produces diploid cells<span>. These diploid cells are cells that contain a complete pair of chromosomes which is 46. The result is two diploid cells after the first meiosis. To provide clear explanation, in contrast haploid cells only contain 23 chromosomes and are created after meiosis II which is 4 in number. </span>
Answer:
B. Primary spermatocytes
Explanation:
The germ cell line is a group of cells found inside the seminiferous tubules. This germ cells undergo mitosis (creating spermatogonia) to have a steady supply of cells that will divide by meiosis to produce gametes. When spermatogonia divide by meiosis at the end of meiosis I the newly created cells are known as primary spermatocytes.
