Answer:
The dura mater and pleural contain fluid which lubricates the brain and lungs respectively.
Explanation:
Dura mater is the outermost layer and a sac in the brain that envelope arachinoid and it's surrond venous channels which carried blood from the brain to the heart. The dura mater contain cerebrospinal fluid and drains it from the brain to the internal jugular vein
The pleural help in the proper functioning of the lungs and it supply pleural fluid which lubricates the lungs and allow for respiration.
Answer: The question is not well stated.
It should be choose the false statement from the options.
The correct answer is option C.
Fossils are not formed when organisms are preserved in recrystallized limestone called marble.
Explanation:
Fossils refers to remains of ancients organisms either plants or animals that have been preserved using a natural means. Fossils can be formed when of plants and animals and get buried during sedimentation or are buried by a lava flow or travel over gravel and leave imprints.
Examples of fossils include bone,shells, wood, coal,oil, DNA segment, objects preserved in Amber e.t.c.
They are use for historic studies, decorations , tourist attractions e.t.c.
Are the pythons a new species?
How can the python population be controlled?
How quickly are pythons reproducing in the Everglades?
<span>How are the pythons affecting other animal populations?
Among the choices, the question least likely to be asked is ARE THE PYTHONS A NEW SPECIES?
It may be asked but the other three questions are more important. This is because we need to know the effect of the growing python population has on the existence of other animals in the Florida Everglades.
Pythons are hunters. Uncontrolled population growth will result to the decrease of the population of other animals because they are the prey of the pythons. Therefore, rate of reproduction and observation regarding their immediate effect to their environment are of utmost importance compared to whether pythons are new species or not.
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There are three main factors that affect the mutation rates in an organism. The three are:
1. <span>Frequency of Primary Changes in DNA
2. </span><span>Probability of Repair
3. </span><span>Probability of Recognition</span>
Answer:
The correct answer is - B. The seeds are in berries that are eaten by birds and dropped as waste away from the plant.
Explanation:
The mountain ash trees contain red berries fruits that attract birds and other organisms. These birds eat these berries and eat berries and fly over the hills or mountains and after digesting they drop the seeds of these berries with the digestive waste. These berries grow on the mountains far from the original source as birds carry them by flying away after eating.
Thus, the correct answer is option B.
