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Svet_ta [14]
3 years ago
12

Why do three species have similarities and differences in their body structure, and how can Xiao use the structures to determine

if the new fossil is more closely related to hippopotamus or green iguanas?
Biology
1 answer:
Varvara68 [4.7K]3 years ago
4 0

Answer:  Xiao can use these structures to create a similarity matrix that enables to differentiate between synapomorphies and homoplasies .

Explanation: A synapomorphy is a trait that has been inherited from the same ancestor, this trait enables to establish a relation of homology between two or more species; while a homoplasy is an analog structure that doesn't have homology.

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When a molecule absorbs a photon, one of its electrons is raised to the ______ state.
77julia77 [94]

The correct answer is: D) excited

A molecule is in an excited state when its energy level is higher than the ground state. That molecule stays in excited state for short time and then returns to a state with lower energy. This return to a lower energy level is described as decay and is the inverse process of excitation.

The transition from ground to excited state of an atom is possible if electrons gain energy that is higher than the difference in energies between the two energy orbits.

7 0
3 years ago
Once an experiment is complete which of the following is not a step to be taken with the data
Mashutka [201]
Your answer would be D




Hope this helps
6 0
2 years ago
Explain the cause-effect relationship between environmental changes and the extinction of species.
Contact [7]

Answer: Anything living needs to have certain conditions, if for example a group of flightless birds who are adapted for warm weather had their environment get colder each year and more extreme the surrounding plants and other animals may have a difficult time surviving and this will cause the birds to have less food. The birds also will not be accustomed to these changes and will not be able to adapt their bodies fast enough. This also makes reproduction difficult and in turn further dwindles the population.

Hope this helps!

Explanation:

4 0
3 years ago
Do you think the vacuum hose is an effective way to remove sea urchins? Why? Explain at least one way this technology can be imp
mamaluj [8]

Answer:

No, or at least not yet. there small and dont do much improvment. If they were much bigger and sucked better, including some touch-ups here and there, they would have a bigger effect on removing sea urchins.

Explanation:

4 0
2 years ago
HELP ASAP!! Which atom is present in everything that is alive or ever was alive? Provide facts.
gregori [183]

Carbon is the atom, which is necessarily find in the living organism.

All the living organisms are made up of biomolecules. All the biomolecules are organic compounds. The substance cannot be consider as living, if it lacks nucleic acids. There are two types of nucleic acids DNA (deoxyribonucleic acid) and RNA (ribonucleic acid), both have a structure made up of carbon rings and chains.

Other than nucleic acids, proteins, enzymes, hormones etc are also made up of carbon. So, all the living cells, or dead remain of organism must have carbon atom.

Hence, the correct answer is option D. carbon.

8 0
3 years ago
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