Cerebrospinal fluid (CSF) is formed by ________ and reabsorbed through arachnoid granulations into ________.


Answer 1
Answer: The correct terms to fill in the blanks are lateral ventricles and venous sinus blood. Cerebrospinal fluid (CSF) is formed by lateral ventricles and reabsorbed through arachnoid granulations into the venous sinus blood. The CSF is a fluid that is clear and colorless found in the spinal cord and in the brain, generally the central nervous system. The CSF functions as a buffer or a shock absorber for the brain. It provides basic mechanical protection for the brain. Also, it helps in the circulation of nutrients and the chemicals that are filtered and aids in the elimination of waste products. 

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Sarah's family would like to book a cruise to the Caribbean, but they are worried about severe weather during their trip. According to the National Weather Service, most severe storms, like hurricanes, occur in the late summer and early fall in that region. Based on scientific knowledge, when should Sarah's family book their cruise? August March October September


Answer: Option (2)

Explanation: The most favorable time for Sarah's family to go for the trip is in the month of March, that falls under the spring season. During this time, there occurs no hurricanes.

Soon after the end of the spring season, summer begins i.e from June, the typical weather conditions gradually builds up that favors the formation and occurrence of hurricanes. Hurricanes are very frequent from June to December, that is by the end of the autumn, hurricane again starts disappearing. Most of the severe hurricanes occurs in the month of September.

Thus the correct answer is option (2).

They should book a trip in March

The seeds in a pod of one of mendel's pea plants are:


Any answer choices would be very helpful


A client tells the nurse, i need help planning an exercise regimen to help manage my weight. which stage of health behavior change does this reflect?


The client is in the stage of preparation for action. In this stage the client accept that there is a need to change, acknowledgement and accept that there is a problem. This occurs when the client ask or seek for help in order to address problems. Preparation for action is the third stage of the five stages of behavioral change; the first is pre contemplation second, contemplation, third, preparing for action fourth, action, fifth, maintenance.


Explain two examples for a red panda for Stimulus and response


One is the outside conditions and the other is how u react to the condition

Which is an example of trace evidence? A. An eyewitness sees a man flee from a robbery at a convenience store.

B. An old bloodstain on a floor is revealed by UV light.

C. Tiny glass fragments are found outside a broken door of a jewelry store where a burglary occurred.

D. A gun is found at the scene of an armed robbery.


The answer is C. The FBI defines Trace evidence as "... materials that could be transferred during the commission of a violent crime. These trace materials include human hair, animal hair, textile fibers and fabric, rope, feathers, soil, glass, and building materials."

Where are endocrine glands found? a.In all vertebrates b.In all chordates c.In only mammals


Endocrine glands can be found in A. all vertebrates. Vertebrates include all animals (with a spine) that exist on our planet, as well as some types of fish. Endocrine glands secrete various hormones inside the body itself, as opposed to the exocrine system. Some endocrine glands are ovaries, testes, pituitary gland, etc.

Which organism would MOST LIKELY be the main source of oxygen in a forest ecosystem? A) ants
B) lichens
C) oak trees
D) mushrooms


Oak trees produce oxygen through the process of photosynthesis. Therefore, option C is correct.

What is photosynthesis?

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of organic molecules, such as glucose.

During photosynthesis, plants take in carbon dioxide from the air and water from the soil, which is used to synthesize organic molecules with the help of sunlight and the green pigment called chlorophyll.

Ants are consumers that obtain energy by eating other organisms, while lichens and mushrooms are not capable of photosynthesis and therefore do not produce oxygen. Oak trees are most likely the main source of oxygen in a forest ecosystem. Therefore, option C is correct.

Learn more about photosynthesis, here:


C) oak trees.....................................................................................srry needed 20 characters. 

Robert decides to go for a run when he gets home from school. As he begins running, his breathing rate starts to increase. What are the mechanisms that cause his breathing rate to increase? A.
When carbon dioxide levels in the blood decrease, the respiratory center sends signals to the alveoli to increase the volume that they expand.
When oxygen levels in the blood decrease, the respiratory center sends signals to the diaphragm to increase the rate at which it contracts and relaxes.
The respiratory control center senses the need for more oxygen, which causes the trachea to push and pull air more forcefully.
The diaphragm senses the need for more oxygen, which causes it to expand and contract more quickly in order to inflate and deflate the lungs.


When a person starts exercising (running) the increase in energy expenditure causes an elevation of oxygen consumption and carbon dioxide production. To compensate for this the respiratory control center senses the LOW oxygen level in blood and the HIGH carbon dioxide level and signals the diaphragm to contract and relax more often (INCREASE THE RATE).

The answer is B

The correct answer is option B which is low level of oxygen in blood is sensed by the brain respiratory center which signals the diaphragm to increase the rate at which it contracts and relaxes.

  • As we are running, our muscles are are using great amount of energy relative to energy productions in these cells. So these cells start breaking the glucose at higher rate to meet up energy needs.
  • So oxygen is used in respiration and its amount suddenly decrease.
  • to increase this oxygen level brain signals to raise the breathing rate.


What factor would not increase the production of glucose by photosynthesis in plants


The factor that would not increase the production of glucose by photosynthesis in plants is excess CO2.

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