Answer:
a The pulmonary artery carries deoxygenated blood.
Explanation:
This is the the only artery that transports deoxygented blood in mammals. specifically it carry deoxgenated blood from the the atria to the pulmonary circulation. That is to the lungs for the exchange of the C02 in the deoxygenated blood with oxygen in the lungs.
The blood thus become oxygenated,and therefore return through the pulmonary veins to the left ventricle.
From the left ventricle ,through ventricular systole,blood is empty into the aorta through the aortic valves into the systemic circulation.
Although,they carry blood away from the heart,but the blood is de oxygenated instead of the usual oxygenated by arteries,They are still regarded as arteries because of convey of blood away from the heart,a typical role of arteries
The answer is <span> b. a process of change through time.
Evolution is a process of change through time. It does not result in progress. Natural selection, one of the mechanisms of evolution, can result in progress and </span>cause some organisms to develop characteristics they need. But generally speaking, natural selection is not the only mechanism of evolution. Other evolutionary mechanisms, such as genetic drift, mutations, migration, can in some cases have a harmful outcome.
Answer:
11. TRUE
12. TRUE
13. FALSE
14. TRUE
15. FALSE
16. TRUE
17. TRUE
18. TRUE
19. TRUE
20. FALSE
Explanation:
Animals can actually reproduce sexually and asexually. Animals that reproduce asexually do that through fission, fragmentation, budding, etc.
Some of the animals that reproduce asexually include planarians, sea stars, annelid worms, etc.
In the fertilization process, the male sperm cell and the female egg cell come together.
Sexual reproduction involve the fertilization of egg by the sperm. In asexual, there is no fertilization. Ferns are spore-bearing plants. They reproduce via spores but their spores are not actually blackish.
En resumen, para que se defina y aborde de manera operativa, el "gen mendeliano" requiere una diferencia de fenotipo asociada con una diferencia de genotipo, mientras que el "gen molecular" requiere transcripción.Answer:
Explanation:
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Answer:
Plastic is made from petroleum oil.
Explanation:
A faucet can simply be described as a tap or valve through which the releasing of a certain liquid can be controlled. Whereas a plastic is made from non-renewable resources such as petroleum oil. Also, the plastic cannot be properly degraded from the Earth after using it. Hence, drinking water from a faucet is more beneficial then drinking water from plastic bottles.
