The correct answer which makes the statement above correct is letter a. <span>Emotional regulation is in part related to maturation of a specific part of the brain in the prefrontal cortex. It is a celebral cortex. I hope I have answered your question.</span>
Plant parts are flattened and at least some of the original plant material remains. Leaves are often preserved as compressions.
1.C | 2.D | 3.B | 4.D
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1. The point in the Moon's orbit when it's farthest away from the Earth is called apogee. On the contrary, the perigee is the point in the Moon's orbit when it's the nearest from the Earth. Those points are very important for tides and other natural phenomenon such as eclipse and in general for the observation of the skies.
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2. Gamma rays are a type of electromagnetic radiation cannot be focused. They diffuse from the emission points until there is an object that stops them. This is the reason why when you have to use gamma rays, you are in other rooms, in order to prevent the radiation to go through them.
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3. The corona it's the outermost layer of the Sun's atmosphere. It's also the part where most of the activity of the sun that we can see take places. It's a subject that has fascinating scientists for centuries and only recently we are studying in more details this interesting and weird place, due to the advancement of technology.
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4. Tides are a result of the gravitational attraction of the Sun and Moon. The Earth, the Sun and the Moon have masses and their own gravities. The interactions between these corps causes tides movement on Earth that are fundament to life on the planet, because they are a fundamental part in the cycle of water and air.
Answer:
A. CELLS
Explanation:
Mature xylem is made up of dead cells that do not have cell contents, while phloem contains living cells (albeit without nuclei). The structure of xylem and phloem is also different. While xylem is made up of tracheids and vessels, phloem is made up of sieve tubes which have many holes for transporting nutrients.
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The most likely to be found in a dichotomous key for identifying a tree by its leaves are the leaf bases attached opposite to each other on the branch.
<h3>How is a dichotomous key used to identify species?</h3>
A dichotomous key is an essential scientific tool, used to identify different organisms, established the organism's observable characters. Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification.
Thus, option "c" is correct.
To learn more about dichotomous key click here:
brainly.com/question/2235448
