Pericardium or pericardial sac.
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<span>Independent variable: Time plants are watered (ex. 8am, 12pm, 4pm, 8pm, 12am)
Dependent variable: growth of the plant
Controlled variable: 1. same type plants, 2. same amount of sunlight, 3. same type of dirt, 4. same type of water, 5. same amount of water (each are self explanatory of how to control)</span>
Answer:
The leukocyte, commonly known as a white blood cell (or WBC), is a major component of the body’s defenses against disease. Leukocytes protect the body against invading microorganisms and body cells with mutated DNA, and they clean up debris. Platelets are essential for the repair of blood vessels when damage to them has occurred; they also provide growth factors for healing and repair.Although leukocytes and erythrocytes both originate from hematopoietic stem cells in the bone marrow, they are very different from each other in many significant ways. For instance, leukocytes are far less numerous than erythrocytes: Typically there are only 5000 to 10,000 per µL. They are also larger than erythrocytes and are the only formed elements that are complete cells, possessing a nucleus and organelles. And although there is just one type of erythrocyte, there are many types of leukocytes. Most of these types have a much shorter lifespan than that of erythrocytes, some as short as a few hours or even a few minutes in the case of acute infection.
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Explanation:
I think it’s A I hope this helps!
The facial nerve (cn vii) passes through the opening in the temporal bone called the stylomastoid foramen.
<h3>Stylomastoid foramen:</h3>
The foramen between the styloid and mastoid processes of the temporal bone of the skull is known as the stylomastoid foramen. It serves as the facial canal's terminus and carries the facial nerve and stylomastoid artery. Bell's palsy may be brought on by facial nerve irritation in the stylomastoid foramen. An unexplained episode of facial muscular paralysis or weakening is known as Bell's palsy. Over the course of 48 hours, it gets worse suddenly.
The stylomastoid foramen is where the 7th cranial nerve leaves the skull and enters the parotid gland at its deep surface. The nerve splits into two major branches, the temporofacial branch, and the cervicofacial branch, right next to the parotid duct.
Learn more about temporal bone here:
brainly.com/question/21825895
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