Answer:
B. often use tube feet to move around in their environment
Explanation:
Tube feet are tiny tubular projections of echinoderms on the underside (oral side). They are a member of the echinoderm water vascular system.
Tubular feet are used for feeding, breathing and shifting. They are arranged around the sides, in grooves. They work by hydraulic pressure. They are used to transfer food in the centre to the oral mouth, and may stick to surfaces. Tube feet allow certain animals to stick and travel slowly to the ocean floor. for example starfish uses tube feet for the above functions.
Hence, the correct option is B.
The answer choice above which best describes how the cell cycle relates to neurons is:
Neurons do not go through M phase.
Option a is the correct answer
<h3>What is a neuron?</h3>
A neuron is defined as structural and functional unit of the nervous system
Complete question:
In humans, adult brain cells called neurons are terminally differentiated. This means that they are completely mature and no longer undergo the cell cycle.
Which of the following statements best describes how the cell cycle relates to neurons?
a. Neurons do not go through M phase.
b. Neurons passes through the M phase
c. None of the above
So therefore, the answer choice above which best describes how the cell cycle relates to neurons is:
Neurons do not go through M phase.
Learn more about neurons:
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Answer:
1-Wegener was a German meteorologist, geophysicist and polar researcher. In 1915 he published 'The Origin of Continents and Oceans', which outlined his theory of Continental Drift. Wegener was a member of four expeditions to Greenland.
2-The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of ancient climatic zones.
3-The movement of these tectonic plates is likely caused by convection currents in the molten rock in Earth's mantle below the crust. ... The long-term result of plate tectonics is the movement of entire continents over millions of years
Explanation:
First of all let's see, what's an <em><u>ecosystem</u></em><em>?</em>
- the ecosystem is defined as the result of what happens when a community of living organisms shares and interacts within their environment.
What this means is that the ecosystem is a product of a <em>specific community</em>. There are several types of ecosystems, for example, a marine ecosystem, the rain forest ecosystem etc.
Now, what's a <em><u>community</u>?</em>
- A community in itself is a group of beings that share something in common and work, interact, and live together.
What happens with the community is that the definition of it does not extend to the specifics of which types of ecosystems can come out of the myriad of communities that exist.
Conclusion: Therefore, a community is a formed group of beings with common locality and with a capacity to come together under a common denominator to establish as specific mode of existence, namely, an ecosystem.
I hope this was helpful ! :)
Answer:
There are great topical treatments and injections, as well as anti-depressant pills
Explanation:
