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Makovka662 [10]
3 years ago
10

How does the cerebral arterial circle ensure that the brain has a constant supply of blood?

Biology
1 answer:
Viktor [21]3 years ago
6 0
Via collateral circulation. This is an alternative route of blood circulation around the brain whenever one pathway is blocked or narrowed. The arterial arrangement of the brain are symmetrically designed in such a way that continuous blood flow the brain is ensured. The cerebral arteries (anterior and posterior) can be interchangeably shared if one of them is restricted. This means that if one artery is blocked/narrowed the other can accommodate the blood flow needed by the brain.
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During a lunar eclipse , Earth casts a shadow on the Moon . What type of shadow would Earth cast if it were flat? What type of s
arsen [322]

Answer: When a planet or moon gets in the way of sunlight approaching that planet or moon is called an Eclipse. Planet Earth (home planet) contains two types of Eclipses namely:

  1. Solar Eclipse: (When moon gets in the way of sunlight hitting the earth and cast a shadow on earth)
  2. Lunar Eclipse: (When earth gets in the way of sunlight hitting the moon and cast a shadow on it)

Difference between two eclipses:

The name of the eclipse describes it self. Like in Solar eclipse sun gets darker and in the lunar eclipse moon gets darker.

Lunar Eclipse: In lunar eclipse earths gets in the way of sunlight and cast a shadow on moon, due to which full moon fades away at night and covered in earths shadow completely.

Types of lunar eclipse: There are two types of lunar eclipse on earth namely:

  1. Total lunar Eclipse: (when moon and the sun are on the exact opposite side of earth. Which makes the moon looks red to the people on earth).
  2. Partial lunar Eclipse: ( This can be explained by the positioning that how the sun, moon and earth are lined up. In partial lunar eclipse some parts of the moon enters earth's shadow and not completely. Due to which the part of moon facing earth's shadow appears very dark).

1).  What type of shadow does Earth cast on the Moon during a lunar eclipse ?

It can be reddish or very dark depending on the type of lunar eclipse happening. In total lunar eclipse earth is completely positioned opposite to sun and moon which makes moon appear red. While in partial eclipse earth cast the very dark shadow on only that part of moon which comes in the way.

2). What type of shadow would Earth cast if it were flat?

The type of shadow also depends on the positioning of earth,, moon and sun. The shadow of the round object is circular when lightens face-on, but will appear as a straight line when viewed from the edge. The sphere object only cast a round shadow on moon. It doesn't depend on the moon that whether the moon is high or low in the sky. If the object is sphere then the shadow casts on moon is in round form.

3 0
3 years ago
The organelle that is involved in cellular respiration and is linked to development of?
Andreyy89

Mitochondria is the organelle which is involved in cellular respiration and that is linked to development. The primary function is to perform cellular respiration.

Mitrochondria which is also known as powerhouse of the cell Because 32 ATP are created from this organelles. It is produced energy in the form of ATP when cell respire.Oxygen and glucose both are the reactants in the process of cellular respiration.

The major product of cellular respiration is ATP which is  waste products include carbon dioxide and water.Cellular respiration takes place in mitochondria, which are often called the cell's "powerhouses" because they make maximume no of a cell's ATP. Glycolysis splits glucose into two three-carbon molecules and makes two molecules of ATP.

To learn more about Mitochondria here

brainly.com/question/10688306

#SPJ4

6 0
1 year ago
He active ingredient(s) in tobacco that is addictive, colorless, and a highly volatile alkaloid is __________.
irina [24]
The answer would be nicotine.


Nicotine is an addictive substance. The type of nicotine that is found particularly in tobacco is nicotiana tabacum. It comes from the nightshade family of plants. Other forms of nicotine can also be found in tomatoes, potatoes, green peppers, and eggplants. 
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3 years ago
When animals move into and out of an area during normal cycles, it is
Ronch [10]

Answer:

Migration

Explanation:

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What are the 7 terms / groups used in Taxonomic Nomenclature?
vredina [299]

Taxonomy, or taxonomy, is originally derived from the need for scientific classification of species. It now extends to other sciences, including human sciences, information sciences and computer science. Sometimes we call it "taxonomy" to describe the result of a taxonomic activity, that is to say a classification.

The traditional classification is based on a fixed hierarchy of categories (taxon ranks), defined as follows:

Reign (or Kingdom) (there are currently six) → Division (or phylum) → class → order → family → gender → species.

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3 years ago
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