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pav-90 [236]
2 years ago
12

What are the only things that can change in a valid experiment? A. Control variable and Range B. Independent variable and Hypoth

esis C. Control variable and Dependent variable D. Dependent and Independent Variable
Biology
1 answer:
Alina [70]2 years ago
4 0

Answer:

B. Independent variable and Hypothesis

Explanation:

The independent variable can be changed by the scientist

Hope This Helped

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The ________ duct empties into the vestibule at the level of the second upper molar. parotid vestibular submaxillary sublingual
alexandr1967 [171]

The parotid duct empties into the vestibule at the level of the second upper molar. Parotid vestibular submaxillary sublingual submandibula.

  • The upper second molar tooth's crown is direct across from the opening of the parotid duct, also known as Stensen's duct, which secretes serous saliva and enters the gingiva-buccal vestibule of the mouth.
  • The parotid ducts typically exit near the maxillary second molars, and they can be felt as little bumps (papillae) on both sides of the mouth. At the sublingual caruncle, the Wharton duct, the primary excretory duct of the submandibular gland, empties into the oral cavity. The sublingual caruncle is a papilla that is situated lateral to the frenulum linguae and medial to the sublingual gland. A set of lymph nodes located in front of the ear is known as the superficial parotid lymph nodes.
  • Learn more about parotid duct here brainly.com/question/24210088

#SPJ4

5 0
1 year ago
En que etapa de la meiosis se forma un nuevo nucleo
finlep [7]

<span>Estoy 50% seguro de que la respuesta es profase</span>
5 0
3 years ago
Unlike T lymphocytes, B lymphocytes
suter [353]

The correct answer is (c) discover antigens in body fluids.

B lymphocytes act as antigen presenting cells that recognizes and displays the antigen to the white blood cells. These cells process the antigens that are present in body fluids. Professional antigen presenting cells includes B-lymphocytes, macrophages, dendritic cells, etc.





4 0
3 years ago
List the ocean regions that have the highest sea surface salinity
AlladinOne [14]

<u>Answer</u>:

The high sea surface salinity can be observed in the Pacific Ocean, the Indian Ocean, the Arabic ocean and the Mediterranean sea.

<u>Explanation</u>:

Due to rainfall and evaporation of water from sea the density varies with varying salts and minerals concentration that aggregate at the surface. The salinity in the seawater varies according to the amount of evaporation from a particular area.

Low salinity water is found in polar and subpolar regions that are near to the equator. Regions of high salinity are observed in the seawater which is centered around 30 degrees north and 30 degrees south to the equator due to the excess evaporation in these areas.

4 0
3 years ago
Give a reasons why
meriva
Lactic acid buildup when you’re exercising causes a build up of oxygen. Your body cannot break down glucose in the blood. So, your heart beat increases because there is more oxygen than normal needing to be pumped throughout the body.

In short terms: because your heart needs to pump more oxygen, it is pumping faster causing a faster heart rate.
3 0
3 years ago
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