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Likurg_2 [28]
2 years ago
6

During an investigation, Sam observes the number of hummingbirds that come to his large bird feeder at different times of day. H

e fills the feeder to the top the first day and counts the number of birds at 6 a.m., noon, and 6 p.m. over ten days. What are the independent and dependent variables in Sam’s investigation?
The number of birds is the independent variable, and time is the dependent variable.
Time is the independent variable, and the number of birds is the dependent variable.
The type of bird food is the independent variable, and the number of birds is the dependent variable.
The number of birds is the independent variable, and the type of bird food is the dependent variable.
Biology
1 answer:
Goryan [66]2 years ago
4 0
"Time is the independent variable, and the number of birds is the dependent variable" is the one among the following choices given in the question that states the independent and dependent variables in Sam’s investigation correctly. The correct option among all the options that are given in the question is the second option.
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The process of mitosis ensures that?
MA_775_DIABLO [31]

Answer:

The process of Mitosis ensures that each new cell receives the proper of chromosomes

4 0
2 years ago
The gray matter in the spinal cord is located in the ____________ , and its shape resembles a letter H, or a butterfly. The cell
mariarad [96]

Answer:

The gray matter in the spinal cord is located in the <u><em>grey column</em></u> , and its shape resembles a letter H, or a butterfly. The cell bodies of somatic motor neurons are primarily housed in the <u><em>ventral or anterior</em></u> horns, which innervate skeletal muscle.

Explanation:

The grey matter is a component of the central nervous system that contains neuronal and glial cells and it can be found in the brain, brainstem and <em>spinal cord, in this last one, is found in the grey column, a mass of grey matter shaped in H form.</em>

In this column the grey matter is divided into four columns (as you can see in the image I added):

  • The dorsal or posterior horn: contains somatosensorial neurons
  • <em> The ventral or anterior horn: contains somatic efferent motor neurons (they exit the spinal cord to innervate skeletal muscle) </em>
  • The intermediate column: contains neurons to innervate visceral organs
  • The lateral horn: same as the intermediate column

I hope you find this information useful and interesting! Good luck!

6 0
2 years ago
If a man's vas deferens is surgically cut and tied off how will it affect him?
kari74 [83]
Sperm will not be able 2 leave his body 

Hope it helps! :)
3 0
2 years ago
Read 2 more answers
Match each field of study to the correct piece of evidence. Tiles molecular biology comparative anatomy developmental biology Pa
PilotLPTM [1.2K]
Molecular Biology
This field of study deals with everything related to macromolecules, thus, what you will need for molecular biology would be something you could get proteins and nucleic acids from. Among the choices, the DNA of a pig and a calf would be the most helpful.

Comparative Anatomy
Comparative anatomy is a field of study that focuses on any similarities or differences between the anatomy or structure of different animals or species in general. Among the options, having the limb structure of a pig and a calf would allow you to practice the field since you have a structure to compare.

Developmental Biology
In this field, your concern would be how species grow and develop. For you to properly observe the growth and development, you must have the embryo of a pig and a calf. Therefore, among the options, this is the correct piece of evidence for this field.

IN SUMMARY:
Molecular Biology - Both DNA of a pig and a calf
Comparative Anatomy - Both limb structure of a pig and a calf
Developmental Biology - Embryo of a pig and a calf
3 0
2 years ago
This glandular tissue resembles that of the salivary gland (clusters of zymogenic cells). What feature unique to the pancreas wo
leva [86]

Answer:

Seen on the explanation.

Explanation:

Glandular tissues are a mixture of both endocrine (ductless, hormones are secreted directly into the blood) and exocrine (have ducts, hormones are secreted into surfaces) glands.

The pancreas and salivary glands are both exocrine glands although the pancreas has an endocrine function via the islets of Langerhans, both aid in the digestion of food.

The pancreas lacks striated ducts and the intralobular duct is similar to the intercalated duct of salivary glands. It often has a collapsed lumens and the cells are cuboidal with little cytoplasmic staining in contrast to acinar cells.

The pancreas can also be distinguished from the parotid gland by the presence of the pancreatic islet (islets of langerharns) which has an endocrine function.

5 0
2 years ago
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