Answer:mollusks, echinoderms, chordates, and annelids
Explanation: Cladograms are diagrams made to link different organisms to a common ancestor, with the use of Cladograms the relationship between organisms will be established and organisms will be grouped together based on their common features or characteristics.
Molluscs, Echinoderm,Chordates and annelids are of a common ancestor, they are all invertebrates with COELOM.
Optical telescope issues visible light emitted by a star to make it appear closer. Radio, Ultra Violet and infrared telescope issues the wavelength of light.
Explanation:
Bohr model is able to explain the electromagnetic spectrum produced by different atoms of different elements. This is because an electron around the nucleus of an atom occupies distinct orbital levels around the nucleus and not in between. When an electron absorbs a specific wavelength of electromagnetic spectrum it 'hops' to an upper electron energy level equivalent to this wavelength of radiation. When the atom 'hops' to a lower orbital level it releases ta specific wavelength of radiation that is equivalent to the difference in the energy levels. This was unaccounted for in the Rutherford's planetary model.
The electron cloud model is thought to be an improvement on the Bohr model because it accounts for the Heisenberg Uncertainty Principle which stipulates that it is impossible to ascertain the momentum and location of an electron at the same time (because merely viewing an electron using light -or any kind of radiation - will change its direction and velocity). This model explains the likely position of an electron using probabilistic equations. The electron cloud model can therefore be used to explain bonding between atoms.
Learn More:
For more on atomic theories check out;
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An annulus is the ring-like structure found on the stipe of some species or mushrooms. This represents the remaining part of the partial veil, after it has been ruptured to expose the gills or other pore producing surface. As its function is to disperse the spores.
<span>I think this question is not worded correctly, as three of these four things are caused by river erosion. River deltas are obviously caused by river erosion. Oxbow lakes occur when a meander of a river (caused by river erosion) is isolated when the river changes course. Alluvial fans are also formations similar to deltas caused by river erosion. The only one which is NOT formed by river erosion is (c) SOIL - soil is formed from inorganic material mixed with the decomposed remains of organic matter.</span>
