The rules of the atoms can be majorly explained through three rules and principles;
- Aufbau principle
- Pauli exclusion principle
- Hund's rule
Hund’s rule states that an atomic orbital is firstly singly occupied by electrons before it is doubly occupied until its fully filled. Electrons in a singly occupied orbital have the same spin quantum number.
Aufbau principle states that the lowest atomic orbitals are occupied first, while Pauli exclusion principle states that the electrons in an atomic orbital cannot have the same quantum state.
Answer:
Flatworms are beings that do not have a heart, veins, arteries, capillaries, hemolymph, or some type of circulatory fluid. Their circulation occurs between cells or intercellularly and they are responsible for transporting substances by diffusion from cell to cell.
Explanation:
Flatworms are considered multicellular eukaryotic organisms. This implies that in their cells they have a cellular nucleus, in which the DNA is contained, structuring the chromosomes. Likewise, they are made up of several types of cells, each one specialized in a specific function. They lack a structured circulatory system as such. Because of this they do not have specialized structures such as a heart or blood vessels, however, the circulation of certain substances is established between their cells. This is done thanks to the diffusion process. Substances pass from one cell to another through this process.This does not apply to all flatworms, since in some species of bog and digenae there is a certain organization and some very small conducting vessels known as the endolymphatic system, the which forms a kind of plexus in the parenchyma.It should also be noted that some species do not even have a digestive system, being the digestive tract the one in charge of digestive functions and the distribution of the nutrients they receive.
Answer: elevation, index, contour interval
Explanation:
Answer:
From the deepest ocean trench to the tallest mountain, plate tectonics explains the features and movement of Earth's surface in the present and the past. Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core.
Explanation:
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